bluuebunny/crossref_metadata_2025_split huggingface dataset:
Daya Serap Air dan Kualitas Wadah Semai Ramah Lingkungan Berbahan Limbah Kertas Koran dan Bahan Organik
Authors: Akhir Jumadil , Allaily Allaily , Syamsuwida Dida , R Sri Wilarso Budi 
Published: May 2020

Abstrak. Wadah semai ramah lingkungan merupakan produk yang dibuat dari bahan organik. Bahan organik yang digunakan dapat berupa limbah, sehingga dapat membantu mengatasi permasalahan lingkungan dalam menangani limbah. Di sisi lain penggunaan wadah semai ramah lingkungan mempunyai keuntungan yang lebih besar dibandingkan dengan polybag berbahan plastik. Penelitian ini bertujuan untuk mengetahui daya serap air dan kualitas Wadah Semai Ramah Lingkungan (WSRL) berbahan limbah kertas koran dan bahan organik lainnya. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan 2 faktor. Hasil penelitian menunjukkan bahwa daya serap air berkisar 171. 04 %-223.69%, dengan nilai tertinggi terdapat pada perlakuan Ab (Koran 100% + 8% perekat) dan terendah terdapat pada perlakuan Ac (Koran 100% + 12% perekat). Penggunaan koran 100% menunjukkan WSRL yang lebih kuat dibandingkan dengan perlakuan lainnya. Water Absorption and Quality of Eco-Friendly Container Waste from Newsprint and Organic Materials Abstract. Organic seedling containers was produced from organic materials. Organic materials used can be waste, so it can help overcome environmental problems in handling waste. On the other hand, the use of organic seeding containers makes the containers more friendly and has greater advantages compared to polybags made from plastic. This study aimed to determine the water absorption and durability of Environmentally Friendly Semi-containers (EFSC) in greenhouses and fields. The design used in this research was complete randomized design with 2 factors. The results showed that water absorption was 171.04% -223.69%, with the highest value found in Ab (100% pulp + 8% glue) treatment and the lowest was in Ac treatment (100% pulp + 12% glue). Using 100% newspapers showed a stronger WSRL compared to other treatments.
Variabilitas Spasial Hujan Tahunan di Wilayah UPT PSDA di Pasuruan, Jawa Timur : Analisis Histogram dan Normal QQ-Plot
Authors: Askin Askin , Indarto Indarto , Ash-Shiddiq Dimas Ghufron , Wahyuningsih Sri 
Published: May 2020

Abstrak. Penelitian ini bertujuan untuk menganalisis variabilitas spasial hujan di wilayah UPT PSDA di Pasuruan. Wilayah studi mencakup kabupaten Probolinggo, kota Probolinggo, Kabupaten Pasuruan dan Kota Pasuruan di Jawa Timur. Data hujan tahunan rerata (Hthn_rrt) dan hujan tahunan maksimal (HthnMaks) dihitung dari kumulatif data hujan harian pada 93 stasiun dan dijadikan sebagai input utama untuk analisis. Panjang periode rekaman data yang digunakan dari tahun 1980 sampai dengan 2015 (35 tahun). Tahap penelitian mencakup: (1) pra-pengolahan data, (2) analisis pendahuluan, (3) analisis menggunakan tool histogram dan voronoi map, (4) interpolasi data dan pembuatan peta tematik. Pra-pengolahan data dilakukan menggunakan excel. Analisis histogram dan QQ-Plot dilakukan untuk melihat variabilitas spasial lebih detail per sub-wilayah. Selanjutnya, metode interpolasi digunakan untuk membuat peta tematik hujan tahunan. Peta tematik menunjukkan hujan tahunan rerata (Hthn_rrt) yang terjadi di wilayah tersebut selama 35 tahun terakhir berkisar antara 1200 sd 2600 mm/tahun. Hujan tahunan maksimal yang terjadi berkisar antara 2100 sd 4500 mm/tahun. Penelitian juga menunjukkan adanya korelasi positif antara lokasi stasiun hujan (elevasi) dengan jumlah hujan tahunan yang diterima. Spatial Variability of Annual Rainfall in The Administrative Area of UPT PSDA at Pasuruan, East Java : Analysis Using Histogram and QQ-Plot Abstract. This research aims to analyze the spatial variability of annual rainfall. Daily rainfall data from 93 rain gauge in the administrative area of UPT PSDA Pasuruan were used as the main input. The average annual rainfall and the maximum annual rainfall obtained from the daily rainfall data. Histograms, and QQ-Plot were used to describe the spatial variability in each sub-regions. Next, interpolation methods is used to create a thematic map of the annual rainfall. The results shows that local spatial variability of rainfall can be visualized more detail for each sub-region by means of histogram and QQ-Plot. The thematic map showed that the distribution of average annual rainfall in the region range from 1,200 mm/year up to 2,600 mm/year. Maximum annual rainfall range between 2,100 mm/year up to 4,500 mm/year. The result also show the positif correlation between the altitude of the rain gauge and local annual rainfall received.
Pengaruh Metode Pengeringan Terhadap Karakteristik dan Sifat Organoleptik Biji Kopi Arabika (Coffeae Arabica) Dan Biji Kopi Robusta (Coffeae Cannephora)
Authors: Santoso Dwi , Egra Saat 
Published: May 2020

Abstrak. Pengeringan merupakan faktor penting dari pengolahan kopi, tanpa pengeringan yang tepat baik itu pengeringan mekanis maupun secara tradisional kualitas biji kopi tidak akan memenuhi standar yang disyaratkan. Proses pengeringan yang baik tidak hanya berpengaruh terhadap sifat fisik biji kopi seperti tingkat kadar air, namun juga meningkatkan citarasa dan aroma dari biji kopi tersebut. Karakteristik terbaik yang diperoleh dari biji kopi setelah proses pengeringan akan menentukan kualitas produk kopi di pasaran. penelitian ini bertujuan mengetahui pengaruh metode pengeringan terhadap penurunan kadar air dan sifat organoleptik biji kopi arabika dan robusta sehingga didapatkan metode terbaik dalam pengolahan kopi. 50 kg biji kopi Arabica dan robusta dikeringkan di bawah sinar matahari dengan menggunakan alas terpal, sedangkan 50 kg sisanya dikeringkan menggunakan mesin pengering biji-bijian tipe batch. Uji organoleptik (rasa dan aroma) menggunakan metode uji Hedonik dan diolah dengan analisis sidik ragam. Pengeringan biji kopi secara mekanis menunjukkan penurunan kadar air yang lebih cepat (17jam) daripada pengeringan secara tradisional (23 jam). Hasil pengujian rasa dan aroma menunjukkan biji kopi Arabica yang dikeringkan menggunakan mesin pengering mekanis lebih disukai panelis dengan nilai uji hedonik tertinggi (67 dan 63 poin). The Effect of Drying Methods on the Characteristics and Organoleptics of Arabica Coffee Beans (Coffeae Arabica) and Robusta Coffee Beans (Coffeae Cannephora) Abstract. Drying is an important factor in coffee processing, without proper drying, both mechanical drying and traditionally the quality of coffee beans will not meet the required standards. A good drying process not only affects the physical properties of coffee beans such as the level of water content, but also increases the flavor and aroma of the coffee beans. The best characteristics obtained from coffee beans after the drying process will determine the quality of coffee products on the market. This study aims to determine the effect of drying method on decreasing water content and organoleptic properties of arabica and robusta coffee beans so that the best method in coffee processing is obtained. 50 kg of Arabica and robusta coffee beans are dried under the sun by using terpal, while the remaining 50 kg is dried using a batch-type grain drying machine. Organoleptic test (taste and aroma) using Hedonic test method and processed by analysis of variance. Mechanical drying of coffee beans shows a decrease in water content faster (17 hours) than traditional drying (23 hours). The taste and aroma test results showed Arabica coffee beans dried using a mechanical drying machine were preferred by panelists with the highest hedonic test values (67 and 63 points).
Pengaruh Konsentrasi Ragi dan Lama Fermentasi terhadap Kadar Air, Kadar Protein dan Organoleptik pada Tempe dari Biji Melinjo (Gnetum gnemon L)
Authors: Yulia Ruka , Hidayat Arif , Amin Amri , Sholihati Sholihati 
Published: May 2020

Abstrak. Tujuan penelitian ini adalah mengetahui pengaruh konsentrasi ragi, lama fermentasi dan interaksi antara konsentrasi dan lama fermentasi terhadap mutu tempe biji melinjo. Penelitian ini menggunakan Rancangan Acak lengkap (RAL) faktorial dengan dua faktor yang terdiri dari 3 level dengan 2 kali ulangan. Konsentrasi ragi (R) sebanyak 3 level R1 = 1%, R2 = 2%, R3 = 3%. Lama fermentasi (F) sebanyak 3 level F1 = 18 jam, F2 = 24 jam, dan F3 = 36 jam. Hasil penelitian menunjukkan bahwa konsentrasi ragi berpengaruh nyata (P 0,05) terhadap warna dan tidak berpengaruh (P 0,05) nyata terhadap kadar air, kadar protein, rasa, aroma dan tekstur tempe biji melinjo. Lama fermentasi berpengaruh nyata (P 0,05) terhadap kadar air dan kadar protein tidak berpengaruh nyata (P 0,05) terhadap warna, aroma, rasa dan tekstur tempe biji melinjo. Interaksi antara konsentrasi ragi dan lama fermentasi (RF) tidak berpengaruh nyata (P 0,05) terhadap kadar air, kadar protein, warna, aroma, rasa dan tekstur tempe biji melinjo. Perlakuan terbaik pada konsentrasi ragi 1% dan lama fermentasi 24 jam (R1F2) dengan kadar air 69,72%, kadar protein 4,69%, warna 3,90 (suka), rasa 4,08 (suka), aroma 4,03 (suka) dan tekstur 3,95 (suka). The Influence of Yeast Concentration and Fermentation Time on Moisture Content, Protein Content and Organoleptic on Tempeh from Melinjo Seeds (Gnetum Gnemon L) Abstract. The aim of this study was to determine the effect of yeast concentration, fermentation time and interaction between concentration and fermentation time on the quality of melinjo seed tempeh. This study uses factorial completely randomized design (RAL) consisting of two factors and three levels with two replications. Yeast concentrations (R) are R1 = 1%, R2 = 2%, R3 = 3%. The fermentation times (F) are F1 = 18 hours, F2 = 24 hours, and F3 = 36 hours. The results showed that the yeast concentration had a significant effect (P 0.05) on the color and had no effect (P 0.05) on moisture content, protein content, taste, aroma and texture of melinjo seed tempeh. The fermentation time had a significant effect (P 0.05) on the moisture and protein content and had no effect (P 0.05) on the color, aroma, taste and texture of melinjo seed tempeh. The interaction between yeast concentration and fermentation time (RF) did not have a significant effect (P 0.05) on moisture content, protein content, color, aroma, taste and texture of melinjo seed tempeh. The best treatment was obtained at yeast concentration of 1% and 24-hour fermentation time (R1F2) with a moisture content of 69.72%, protein content 4.69%, color 3.90 (likes), taste 4.08 (likes), aroma 4.03 (likes) and texture 3.95 (likes).
Dampak Perubahan Iklim Terhadap Debit Andalan Sungai Krueng Aceh
Authors: Ferijal Teuku , Mustafril Mustafril , Jayanti Dewi Sri 
Published: May 2020

Abstrak. Perubahan iklim yang menyebabkan perubahan karakteristik curah hujan berdampak pada aliran sungai. Penelitian ini bertujuan untuk menganalisa dampak perubahan iklim terhadap debit andalan. Data-data yang digunakan dalam penelitian ini adalah data klimatologi dan hidrologi yang semuanya dikumpulkan dari stasiun-stasiun yang ada dalam wilayah penelitian yaitu DAS Krueng Aceh. Model kesetimbangan air variable infiltration capacity digunakan dalam penelitian ini untuk menghitung debit sungai harian berdasarkan data curah hujan dan evapotranspirasi harian. Hasil analisa menunjukkan bahwa suhu udara tahunan rata-rata DAS Krueng Aceh telah mengalami peningkatan yang drastis sebesar 0,6°C sejak tahun 2001. Perubahan tersebut juga diikuti dengan adanya tren peningkatan curah hujan (22%) pada bulan-bulan basah (November-Januari) serta penurunan curah hujan (26%) pada bulan-bulan kering (Mei-Agustus). Dampak dari perubahan iklim tersebut adalah terjadinya penurunan debit sungai Krueng Aceh yang ditandai semakin meningkatnya kemungkinan debit aliran lebih kecil dari 18,77 m3/s dan menurunkan debit andalan terutama pada periode April-Desember sebesar 23,5%. Impact of Climate Change on Dependable Discharge in the Krueng Aceh River Abstract. Climate changes altering precipitation characteristic bring impact on streamflow. This research aims to analyze impact of climate changes on dependable discharge. Climatological and hydrological data were collected from stations within Krueng Aceh Watershed. Variable infiltration capacity water balance model was applied to calculate daily streamflow base on daily precipitation and evapotranspiration. The results suggested that annual air temperature of Krueng Aceh Watershed has been squally increasing 0.6°C since 2001. The changes were also detected on monthly precipitation i.e. a 22% increase in wet period (November-January) and a 26% decrease in dry period (Mei-August). The changes have impacted the Krueng Aceh River flow by increasing possibility of flow lower than 18.77m3/s and decreasing dependable discharge by 23.5% for period of April-December.
Penggunaan Kendal Sebagai Media Penyimpan Panas pada Kolektor Surya Plat Datar
Authors: Mustaqimah Mustaqimah 
Published: May 2020

Abstrak. Kolektor surya merupakan suatu alat yang berfungsi untuk mengumpulkan energi matahari yang masuk dan diubah menjadi energi termal dan meneruskan energi tersebut ke fluida. Fluida yang digunakan dapat berupa minyak, oli ataupun udara. Penelitian ini bertujuan untuk membangun dan menguji kinerja kolektor surya plat datar dengan menggunakan kendal (lemak sapi) sebagai media penyimpan panas. Bagian utama kolektor surya plat datar yang dibangun dari: rangka, cover, isolator, pipa tembaga dan absorber. Penyiapan kolektor surya plat datar yaitu dengan cara memanaskan lemak sapi hingga mencair, lalu dimasukkan kedalam pipa tembaga. Kemudian kolektor surya diletakkan pada posisi orientasi dengan sudut kemiringan 20 o. pengujian dilakukan mulai pukul 09.00 sampai dengan 17.30 WIB pada cuaca yang cerah. Berdasarkan hasil penelitian, total radiasi tertinggi terjadi pada hari pertama sebesar 4240,82 (Watt Jam/m2). Jumlah energi yang diterima oleh kolektor tertinggi terjadi pada hari pertama yaitu sebesar 5540,07 kJ. Suhu rata-rata pada media penyimpan panas (kendal) adalah sebesar 43,20oC dan menghasilkan suhu rata-rata outlet sebesar 45,6oC. Hasil dari penelitian menunjukkan bahwa penggunaan kendal sebagai media penyimpan panas sangat baik karena suhu kolektor surya tetap stabil pada saat radiasi matahari sudah tidak ada. Use of Kendal As a Heat Storage Medium on The Flat Solar Collector Type Abstract. Solar collector is a device that serves to collect the incoming solar energy and converted into thermal energy and redirects energy into the fluid. This study aimed to develop and test the performance of solar collector using kendal (beef fat) as a heat storage medium. The main parts of flat solar collector is constructed of: frame, cover, insulator, copper pipes and absorber. Preparation of flat plate solar collector that is done by heating until melted beef fat. Then inserted it into the copper pipe. After that, the solar collector is placed in a position with a slope angle 20o orientation. Testing was conducted from 09.00 until 17.30 on a sunny day. Based on the results of the study, the highest total radiation occurs on the first day at 4240.82 (Watt hours / m2). The amount of energy received by the collector is highest on the first day which amounted to 5540.07 kJ. The average temperature in the heat storage medium (Kendal) amounted 43.20 oC and generates an average outlet temperature that is equal 45.6 oC. The results of this study indicate that the use of kendal as excellent heat storage medium for solar collector temperature remains stable when solar radiation is not there.
On Square-Integrable Representations of A Lie Group of 4-Dimensional Standard Filiform Lie Algebra
Authors: Kurniadi Edi 
Published: May 2020

In this paper, we study irreducible unitary representations of a real standard filiform Lie group with dimension equals 4 with respect to its basis. To find this representations we apply the orbit method introduced by Kirillov. The corresponding orbit of this representation is genereric orbits of dimension 2. Furthermore, we show that obtained representation of this group is square-integrable. Moreover, in such case , we shall consider its Duflo-Moore operator as multiple of scalar identity operator. In our case that scalar is equal to one.
Minho Communication Assessment Scale: Development and Validation
Authors: Gonçalves Mónica , Gonçalves Nuno , Mendonça-Gonçalves Marina , Sousa Ana-Luísa , Morgado Pedro , Sousa Nuno , Costa Patrício , Cerqueira João 
Published: May 2020

Introduction: Verbal and non-verbal communication skills are core competencies in medical practice and should be acquired and monitored in medical schools. However, their assessment poses a challenge. The aim of this study is to develop and assess the psychometric properties, validity and reliability of a communication assessment scale.Material and Methods: We developed a communication assessment scale, composed by five dimensions (Structure, Way of Questioning, Behavior and Posture, Clarity of information and Emotional dimension). Two focus groups and a development group, composed by faculty members and standardized patients experienced in assessment, were responsible for creating the scale.Results: The communication assessment scale was tested on 332 students from the 3rd and 6th year of medical school, with a total of 2754 assessments, performed by faculty members and standardized patients. A descriptive analysis, an exploratory factor analysis, a confirmatory factor analysis and a Cronbach’s alpha analysis to establish internal reliability were conducted.Discussion: The Minho Communication Assessment Scale can be effectively used by both faculty members and standardized patients, providing correct students assessment and relevant feedback to the students. The final Minho Communication Assessment Scale has a total of 19 items, being simple and intuitive to use. The exploratory factor analysis and confirmatory factor analysis results were satisfactory. Cronbach’s alpha value revealed high internal consistency of Minho Communication Assessment Scale.Conclusion: The final Minho Communication Assessment Scale proved to be simple to use and to have very good psychometric properties. Our results show that the Minho Communication Assessment Scale is a valid scale to assess communication skills which can be accurately replicated on objective structured clinical examinations focusing on communication.
Aspect based Sentiment Analysis of Employee’s Review Experience
Authors: Dina Nasa Zata , Juniarta Nyoman 
Published: May 2020

Background: Employees of technology companies evaluate their experience through online reviews. Online reviews of companies from employees or former employees help job seeker to find out the weaknesses and strengths of the companies. The reviews can be used as an evaluation tool for each technology company to understand their employee’s perceptions. However, most information on online reviews is not well responded since some of the detailed information of the company is missing. Objective: This study aims to generate an Aspect-based Sentiment Analysis using user review data. The review data were then extracted and classified into five aspects: work balance, culture value, career opportunities, company benefit, and management. The output of this study is the aspect score from each company.Methods: This study suggests a method to analyze online reviews from employees in detail, so it can prevent the missing of specific information. The analysis was sequentially carried out in five stages. First, user review data were crawled from Glassdoor and stored in a database. Second, the raw data were processed in the data pre-processing stage to delete the incomplete data. Third, the words other than noun keyword were eliminated using Standford POS Tagger. Fourth, the noun keywords were then classified into each aspect. Finally, the aspect score was calculated based on the aspect-based sentiment analysis.Results: Result showed that the proposed method managed to turn raw review data into five aspects based on user perception.Conclusion: The study provides information for two parties, job seeker and the company. The analysis of the review could help the job seeker to decide which company that suits his need and ability. For the companies, it can be a great assistance because they will be more aware of their strengths and weaknesses. This study could possibly also provide ratings to the companies based on the aspects that have been determined.
The development of village-owned enterprises: Lessons learned from Ponggok Village
Authors: Huruta Andrian Dolfriandra , Kundhani Eranus Yoga , Manurung Chistopher Ramaoli 
Published: May 2020

The Tirta Mandiri village-owned enterprises or BUMDes is one of the best village-owned enterprises in Indonesia. It has made these village-owned enterprises a learning center for others in Indonesia. Currently, Tirta Mandiri village-owned enterprises have the role of creating new business fields in Ponggok Village (Polanharjo District, Klaten Regency). This study applied a qualitative method by conducting a case study. The primary data gathered through in-depth interviews with seven key informants and two supporting informants. The secondary data collected through the business management and planning documents of the Tirta Mandiri village-owned enterprises. Tirta Mandiri village-owned enterprises have been able to develop seven business units in the form of Limited Companies (Ltd.). Their presence can increase the output, income, and labor (multiplier effect) of the Ponggok villagers. It is proven by the presence of new businesses in the community. The development of the Tirta Mandiri village-owned enterprises is inseparable from the social capital of the community as a foundation for the development of the village-owned enterprises themselves. Furthermore, community participation actualized through investments, which are a sign of the public’s trust in the village-owned enterprises. Money is energy, and planning is the compass, and authority is the driver where the village takes part in realizing its autonomy. Learning from experience is one way to create sustainable village-owned enterprises.