bluuebunny/crossref_metadata_2025 huggingface dataset:
O ENSINO DA MATEMÁTICA NA EJA: UM ESTUDO SOBRE AS DIFICULDADES E DESAFIOS DO PROFESSOR
Authors: Pardim Cristiane Matos Costa , Calado Moacyr Cerqueira
Published: November 2019

A educação de Jovens e Adultos (EJA), reconhecida como modalidade de ensino, tem no professor um colaborador no processo ensino-aprendizagem. Destaco neste estudo os professores da disciplina matemática. Este artigo objetivou conhecer quais as principais dificuldades e desafios encontrados por esses profissionais ao trabalharem com turmas de EJA. A metodologia utilizada foi a realização de uma pesquisa exploratória, de natureza qualitativa, com utilização da técnica de entrevistas. Os resultados apontam que as maiores dificuldades encontradas estão na deficiência de uma formação de professores específica para atender ao público em questão, na estrutura educacional das escolas e nas condições sociais em que os alunos se encontram. Conclui-se que, tanto para profissionais quanto para alunos, a precariedade do sistema educacional, ressaltando a falta de formação específica para os professores, constitui-se um agravante no alcance da qualidade no processo de ensino-aprendizagem, principalmente para os alunos da EJA.
Autonomia w klasach dwujęzycznych: sprawozdanie z badań jakościowych
Authors: Majewska Renata
Published: November 2019

The aim of the article is to reflect on the autonomy development in the CLIL context in Poland. The research question is: How does the task-oriented didactics – using the example of comparison – influence the development of learners’ personal communicative competence in the conditions of semi-autonomy in the CLIL system? The article constitutes a short qualitative research report with the description of its educational context and theoretical background related to autonomy in CLIL.It also presents aims of the research, its course, the data collection techniques, as well as analysis and general conclusions.
Uji Pengaruh Suhu Pengeringan pada Karakteristik Kimia dan Sensori Kaldu Bubuk Kepala Ikan Gabus (Channa striata)
Authors: Sobri Akhmad , Herpandi Herpandi , Lestari Susi
Published: November 2019

The purposes of this research was to investigate the proximate content, amino acid content and sensory snakehead fish (Channa striata) powder broth with the effect of drying temperature. The research was conducted on April 2016 to August 2016. The research method was used randomized block design (RBD). Drying temperature treatment used 50 oC, 60 oC and 70 oC. The parameters of this research was proximate analysis such as water content, ash content, protein content, lipid content, and carbohydrate content while for amino acid analysis only to find out the amount of essential amino acids and non-essential course and analytical sensory (appearance, flavor, texture, color and taste). Proximate content gave significant effect on protein content and there was no effect on water content, ash content, fat and carbohydrate content. Gave significant effect on sensory analysis (appearance, flavor, texture, color and taste). The concentration of protein content of the resulting broth powder ranges from 11.99% to 20.94%, there are eight types of essential amino acids and 7 types of non-essential amino acids while sensory analysis produced for sightings range from 3.72 to 4.52, flavor range between 3.8 to 4.32, textures range from 3.52 to 4.4, color range from 1.88 to 3.8 and taste range from 3.84 to 4.4.
Pengaruh Kombinasi Tepung Ikan Sepat Siam (Trichogaster pectoralis) dan Tepung Terigu Terhadap Karakteristik Sensori dan Fisiko-Kimia Mantou
Authors: Aryani Partha , Nopianti Rodiana , Widiastuti Indah
Published: November 2019

The purpose of this research was to determine the effect of combinations of fish meal and wheat flour to physicochemical and sensory of mantou. This research used a randomized block design consisted of one-factor treatment with three replications. Factor treatment consists of combinations fish meal and wheat flour 0 g : 100 g, 10 g : 90 g, 20 g : 80 g, 30 g : 70 g, 40 g : 60 g and 50g : 50 g. The parameters observed were physical characteristics (percentage level of development of bread, texture, and Whiteness), chemical characteristics (moisture content, ash, protein, lipid, carbohydrate, calcium and phosphor) and sensory characteristics (color, flavor, aroma, and texture). Result of this research showed that average value percentage level of development mantou were 3.49 to 1.85, texture was 661.53 gf to 1307.13 gf, whiteness was 63.32% to 51.20% moisture content were 35.92% to 30.79%, ash content was 1.73% to 3.99%, protein was 11.20% to 26.75%, lipid was 3.51% to 7.26%, carbohydrate was 47.64% to 31.21%, calcium was 7.21 mg/100g to 25.21 mg/100g, phosphor were 53.54 mg/100g to 51.53 mg/100g, and a sensory test had significantly (Fhitung>Ftabel) for color, flavor, aroma, and texture. The best treatments according to sensory characteristics were 20% of the fish meal.
Karakteristik Fisikokimia dan Sensoris Nugget Kijing (Pilsbryoconcha exilis)
Authors: Sari Ina Permata , Herpandi Herpandi , Lestari Shanti Dwita
Published: November 2019

The purpose of this research was to observe the effects of threadfin breams surimi (Nemiptarus nematophorus) and mussel (Pilsbryoconcha exilis) to physical, chemical and sensory characteristics of nugget. This research used randomized block design (RBD) consisted of one factor treatment and three replications. Factor treatment consisted of combination ratio threadfin breams surimi and mussel 100% : 0%, 75% : 25%, 50% : 50%, 25% : 75%, 0% : 100%. The variables observed were physical characteristics (elasticity), chemical characteristics (moisture content, ash, protein, fat, carbohydrate, and iron) and sensory analysis on appereance, flavour, taste and texture of the final products. Different combinations of threadfin breams surimi and mussel had significant effect on elasticity (222.53 gf, 278.33 gf, 300.66 gf, 312.13 gf, 452.86 gf), ash content (3.26%, 2.51%, 2.23%, 1.63%, 1.45%), protein content (8.27%, 12.11%, 14.8%, 17.14%, 20.73%), carbohydrate content (17.32%, 14.34%, 11.11%, 8.42%, 3.5%), and iron (23.61%, 18.56%, 12.77%, 7.24%, 1.54%). Based on the results, the greater addition of surimi concentration caused the increasing value of elasticity, protein, and water content. While the greater addition of mussel concentration resulted on the increased value of ash, fat and iron. This research showed that the combination of 75% threadfin breams surimi and 25% mussel produced on nugget with the best characteristics.
Pengaruh Jenis Ikan dan Metode Pemasakan terhadap Mutu Abon Ikan
Authors: Anwar Chairil -
Published: November 2019

Fish is one source of animal protein that is widely consumed by society, is easy to get, and the price is cheap. But fish quickly experience the process of decay. Therefore, fish preservation should be known to all levels of society. One of the products of fish processing through the process of preservation is abon. Abon fish is a type of preserved food made from fish that are seasoned, processed by boiling, frying and pressing or separating oil. The resulting product has a soft shape, good taste, distinctive smell, and has a long-lasting power. This study aims to examine the effect of fish species and the method of cooking fish meat is the steaming and boiling treatment of the quality of fish produced abon. The results showed that fish species had a significant effect (P ? 0,01) on protein content, moisture content, fat content, ash content and color organoleptic value, and not significant (P> 0,05) to yield, the organoleptic value of texture, aroma, and flavor. The method of cooking fish meat was very significant (P ? 0,01) to protein content, fat content and not significant (P> 0,05) to yield, water content, ash content, the organoleptic value of texture, aroma, color, and flavor. The interaction between fish species and cooking method of fish meat had no significant effect (P> 0,05) on all parameters except on yield of abon fish produced.
MASKULINISASI IKAN CUPANG (Betta sp.) MENGGUNAKAN EKSTRAK AKAR GINSENG (Panax sp.)
Authors: Ferdian Asrul . , . Muslim , Fitrani Mirna
Published: November 2019

ABSTRACT The use of extract root ginseng in the process of Betta fish masculinization is expected to increase the testosterone. The purpose of this research is to determine the effect ginseng root extract to the percentage of the male betta fish by masculinization. This study has been conducted at the Basic Aquaculture Laboratory, Faculty of Agriculture, Sriwijaya University. This study use a completely randomized design with 4 treatments and 3 replications. The treatments in this research was betta fish larvae aged 7 days that submersed on ginseng root extract media with different concentration for 8 hours. The treatment were the addition of ginseng root extract as much as 1 mg/L (P1), 2 mg/L (P2), 3 mg/L (P3), 4 mg/L (P4) and without ginseng root extract addition as control (P0). Parameters observed consist of percentage of betta fish male, survival rate and quality of water. The result of this research shows that the addition of extract panax ginseng with difference concentration has significant effect to male betta fish percentage, but there is no a significant effect on survival rate. Treatment P3 with concentration 3 mg/L is the best result, it produced 95.05% of male betta fish after immersion for 8 hours. Keywords : Betta fish, Ginseng root extract, Immersion, Masculinization
PERTUMBUHAN DAN KELANGSUNGAN HIDUP BENIH IKAN GABUS (Channa striata) YANG DIBERI BERBAGAI JENIS ATRAKTAN
Authors: Zainuri Muhamad , Fitrani Mirna , . Yulisman
Published: November 2019

ABSTRACT       The addition of atractant in feed is expected could improve snakehead respond,andincreasing its growth. The Aims of this study are to knowfeed respond, the feed intake, growth, feed efficiency, and survival rate of snakehead fry given by feed with different various of atractant.This research was conducted on Jun-July 2016 at Laboratorium Dasar Perikanan Program Study Budidaya Perairan, Agriculture Faculty, Sriwijaya University. This research was using completely randomized designed with four treatments and three replications, consist offeed without attractants (P0), feed with 2% fish meal addition (P1), feed with 2% squid meal addition (P2), and feed with 2% shrimp meal addition (P3). Fish maintained for 30 days and fed four times a day (at 07.00, 11.00, 14.00 and 17.00) are at satiation. Parameters of this research are feed respond, the feed intake, growth, feed efficiency and survival rate of snakehead fry. The result showed that given of atractant effect to feed intake and absolute growth of weight (Channa striata) fry, yet did not give effect to snakehead respond significantly, for absolute growth of length, feed efficency and survival rate. The best treatment was P3 (feed with 2% shrimp meal addition) with feed intake was 17.19 g, absolute growth of weight was 0.52 g, absolute growth of length was 1.33 centimetre, survival rate was 73.33% and feed efficiency was 48.97%. Physical and chemical of media maintanace, temperature 25-28oC, pH was 6.35-6.96, DO was 5.05-5.96 mg.L-1 and ammonia 0.02-0.17 mg.L-1. Keywords        : Atractant, Channa striata, Growth and feed respond
PENGARUH FREKUENSI PEMBILASAN FILTER ARANG AKTIF BATOK KELAPA DAN SPONS PADA SISTEM RESIRKULASI TERHADAP KUALITAS AIR MEDIA PEMELIHARAAN IKAN MAANVIS (Pterophyllum Scalare)
Authors: Apriadi Dedi . , Jubaedah Dade . , Wijayanti Marini .
Published: November 2019

ABSTRACTThe frequency of flushing on coconut charcoal and sponge filters by Recirculation Aquaculture System (RAS) can apply to maintain water quality. This research was conducted on Laboratorium Dasar Perikanan, Department of Aquaculture, Faculty of Agriculture, Sriwijaya University from March to May 2017. The study used Completely Randomized Design with 4 treatments and 3 replications. The treatment were using filter flushing every week (P1), 2 weeks (P2), 3 weeks (P3) and without leaching (P4). The parameters observed were temperature, pH, dissolved oxygen (DO), turbidity, total dissolved solids (TDS) and ammonia. The results showed that the flushingfrequency gave of the filter has a positive effect on water quality parameters. Treatment P2 has resulting better water quality such as temperature (28.3-29.2), pH (6.9-7.2), DO (1.11 mg.L-1), Turbidity (0.00 NTU), TDS (22.33 mg.L-1), ammonia (0.020 mg.L-1), survival rate 83.33%, absolute growth (0.93 cm for lenght and 0.58 g for weight). Keywords: flushing of filter, resirculation system, water quality, angelfish
ANALISIS KUALITAS PERAIRAN DI SUNGAI KOMERING DESA ULAK JERMUN KABUPATEN OGAN KOMERING ILIR SEBAGAI DASAR PENGELOLAAN BUDIDAYA IKAN SISTEM KERAMBA
Authors: Irawan Reno , Susanto Robiyanto Hendro , Ridho Mohamad Rasyid
Published: November 2019

ABSTRACT                The increasing of people amount, the more activities done happen around the Komering River. Many activities done can potentially lead to a decrease in water quality in the river. This study aimed to analyze the water quality in accordance with the raw river water quality criteria for class I and to analyze the water quality state in the Komering river of  Ulak Jermun village Sirah Pulau Padang District. This research was conducted in the Komering Ulak Jermun village Sirah Pulau Padang District from November to December 2016. The observation of water samples conducted at the Laboratory Pengujian Terpadu of Chemistry Faculty of Mathematics University of Sriwijaya. This research used survey method that consists of three stations with 9 sampling points and sampling was conducted 4 times in a month. Based on the analysis of water quality parameters are still within the range of quality standards among others, temperature, pH, BOD5 and phosphate while the water quality parameters exceed the quality standard that TSS, dissolved oxygen, COD and ammonia and based on the analysis storet Komering river waters classified into water quality class C, i.e. moderately contaminated. Keywords: Komering River, Water Quality, Storet  Methods, Water Quality Index
PENGGUNAAN KAPUR DOLOMIT [CAMG(CO3)2] PADA DASAR KOLAM TANAH SULFAT MASAM TERHADAP PERBAIKAN KUALITAS AIR PADA PEMELIHARAAN BENIH IKAN PATIN (Pangasius sp.)
Authors: Umari Zainal , . Marsi , Jubaedah Dade
Published: November 2019

ABSTRACTAcidic waters was common problem in aquaculture in acidic soil area. Poor water quality in the acid sulfate soil pond has potential to decrease fish survival rate dan fish growth. Liming pond is one of method to neutralize (buffer) acid in fish pond. The aim of the research is to determine the best dosage of dolomite lime [CaMg(CO3)2] in acid sulfate soil pond to water quality, survival rate and growth of catfish. The research conducted on September-October 2016 in Laboratorium Kolam Percobaan, Program Studi Budidaya Perairan, Fakultas Pertanian, Universitas Sriwijaya, Indralaya. The research based on completely random design with four treatments and three replications. The treatments were different dosage of dolomite lime that are 6 (P1), 9 (P2), 12 (P3), and 15 (P4) ton/ha equivalent CaCO3. The research parameter were water quality, survival rate, and growth. The result showed that dosage 12 ton/ha was the best treatment that has highest survival rate 96.6 %, absolute growth of length 3.5 cm, weight 7.91g and feed efficiency 106,77%. Keywords: liming, dolomite, acid sulfate soil, seedling catfish
PERIODE WAKTU PERGANTIAN CACING SUTERA DENGAN IKAN RUCAH SEBAGAI PAKAN BENIH IKAN GABUS (Channa striata)
Authors: Setiawan Ari , . Yulisman , Sasanti Ade Dwi
Published: November 2019

ABSTRACT Silk worm is one of natural feeds for snakehead fry. The availability of silk worm could be a problem for snakehead culture in big scale. One of the solution is trash fish utilization to reduce silk worm. The purpose of this research was to determine the best of feeding period to replace silk worm with trash fish based on growth and feed efficiency of snakehead fry. This research was conducted on July until September 2015 in Laboratorium Dasar Perikanan, Program Study of Aquaculture, Faculty of Agriculture, University of Sriwijaya. The research was based on Completely Randomized Design (CRD) with five treatmens and three replications. The treatments are snakehead 21-51 days were fed by silk worm (P1), snakehead 21-41 days were fed by silk worm and 40-51 days by trash fish (P2), snakehead 21-36 days were fed by silk worm and 35-51 days by trash fish (P3), snakehead 21-31 days were fed by silk worm and 30-51 days by trash fish (P4), and snakehead 21-51 days were fed by trash fish (P5). The results showed that feeding period between silk worm and trash fish had no significant different on growth and feed efficiency of snakehead fry. The result indicated that trash fish can be utilized for feeding of snakehead fry age 21 until 51 days (P5). Water quality during the research were temperature 25-290C, ammonia 0.11-0.29 mg.L-1, dissolved oxygen 4.44-6.88 mg.L-1, and pH 5.3-7.2. Water quality parameters were still in good range for culture                                   of Channa striata. Keywords : Snakehead, , Silk worm, Ttrash fish
PEMANFAATAN CAMPURAN BUAH NANAS, AIR CUCIAN BERAS, DAN GULA SEBAGAI SUMBER KARBON PADA MEDIA PEMELIHARAAN IKAN LELE ( Clarias sp ) DENGAN SISTEM BIOFLOK
Authors: Sitohang Martogi Leo , Fitrani Mirna , Jubaedah Dade
Published: November 2019

ABSTRACTBiofloc technology needs carbon sources to biofloc forming. The objective of this research is the effect of pineapple,rice-washing liquid, and sugar mixture as carbon sources to the rearing media of catfish that will be  cultured with biofloc system. This reseach conducted for 30 days from April to May 2016 in the Perumahan Yusuf Halim Pondok Ijo, Jalan Lintas Timur KM 32 Indralaya, Kabupaten Ogan Ilir Provinsi Sumatra Selatan. This Research is using completely randomized design which are contained by 4 treatments and 3 replication the treatments are carbon sources from molase with C/N 15 Ratio (P0), carbon sources from mixture of pineapple, rice-washing liquid and sugar with C/N 10 Ratio (P1), C/N 15 Ratio (P2), C/N 20 Ratio (P3). The parameter are survival rate, growth, food efficiency and water quality.Keywords : Biofloc, Catfish, Pineapple, rice-washing liquid, Sugar, C/N Ratio
Asosiasi Gastropoda Dengan Lamun (Seagrass) Di Perairan Pulau Tangkil Lampung
Authors: Sari Puspa Deka , Ulqodry Tengku Zia , Aryawati Riris , Isnaini Isnaini
Published: November 2019

Komunitas gastropoda merupakan salah satu komponen penting dalam rantai makanan di padang lamun. Penelitian ini bertujuan untuk mengetahui komposisi jenis, kerapatan lamun, kepadatan gastropoda, indeks komunitas gastropoda dan hubungan antara kerapatan lamun dengan kepadatan gastropoda di Perairan Pulau Tangkil. Penelitian ini dilaksanakan pada bulan Mei – Juli 2018, dengan menggunakan metode transek linier kuadrat 1x1 m. Pengambilan data dilakukan di 4 stasiun, dimana setiap stasiun dibagi menjadi 3 transek dan pengukuran parameter fisika dan kimia perairan dilakukan pengulangan sebanyak 3 kali. Hasil penelitian di Pulau Tangkil ditemukan 16 jenis yang terdiri dari 6 ordo, 8 famili gastropoda. Nilai kepadatan tertinggi jenis gastropoda didominansi oleh jenis Turridae sp, sedangkan untuk lamun diperoleh 3 spesies, 2 ordo dan 3 famili. Kerapatan lamun tertinggi adalah jenis E. acoroides dengan nilai kerapatan 2- 48 tegakan/m2. Kerapatan lamun dengan kepadatan gastropoda di Pulau Tangkil memiliki hubungan yang sedang dengan nilai korelasi 0,6693, dan bersifat asosiasi positif. Nilai indeks keanekaragaman gastropoda 1,695 yang dikategorikan sedang, indeks keseragaman 0,9425 yang tergolong stabil dan indeks dominansi 0,1925 yang tergolong rendah.
KAJIAN EKSPERIMENTAL KUAT TEKAN BETON BENDA UJI SILINDER DIKEKANG DENGAN BAHAN CARBON FIBER WRAP
Authors: Panggabean Immanuel Panusunan Tua , Tarigan Valentana Ardian
Published: November 2019

Changes in building functions by increasing the number of floors to the top / vertical direction or also called by increasing the number of levels will increase the burden on the pole/ column, and changes by removing one of the pillars to expand the room will add burden to the columns and beams. Impairment of concrete quality after the implementation of structural construction is also a problem that is often encountered in the implementation of construction. Beams, columns, plates are structural elements used to receive and distribute loads. Expenses that are added as a result of changes in the function of the structure, additional load on the building, or not achieving the quality of the concrete plan of the building structure. Stages of testing by forming cylindrical specimens of 15 (fifteen) pieces, with each of 5 (five) specimens carried out without using carbon fiber wrap to represent the conditions of specimens in the field which are below the standard quality plan in this study concrete quality plans carried out using a job mix formula for f'c = 30 MPa, while 10 (ten) other test specimens are carried out by confinement using fiber wrap material. Observations were made by looking at the addition of compressive strength of concrete on the given fiber wrap restraints. Other observations are made by observing the collapse pattern and the mechanism of collapse that occurs with and without the test specimen mounted in restraints. The compressive strength of concrete increased by 54% for typical restraints 1 using standard fiber direction and 23% for typical restraints 2 using the opposite direction of standard fiber. The collapse model of the Test object that is not restrained is by following the standard collapse model in SNI, while the Test object that is restrained experiences collapse after the Carbon Fiber Wrap material is torn due to the addition of compressive load on the Test Object.
Respon AVO dan Pemodelan Subsitusi Fluida dengan Menggunakan Teori Gassmann dan Differential Effective Medium pada Batuan Karbonat
Authors: Hambali M. Dhany
Published: November 2019

Pemodelan subsitusi fluida menjadi salah satu hal yang penting dalam studi mengenai seismik attribute. Pemodelan subsitusi fluida dapat melihat anomali dari respon Amplitude Versus Offset (AVO) dari batuan tersebut. Anomali dari Amplitude Versus Offset pada umumnya disebabkan karena kehadiran dari hidrokarbon atau fluida pada pori batuan. Pendekatan yang biasa digunakan untuk melakukan pemodelan subsitusi fluida adalah berdasarkan persamaan Gassmann yang menghubungkan antara modulus bulk pada saat saturasi dengan modulus bulk frame batuan dan properties dari fluida pengisi pori nya. Metode lain adalah Differential Effective Medium (DEM) yaitu berdasarkan penambahan inklusi fluida secara infinitedesimal pada matriks yang telah ada. Hasil pemodelan berupa analisa respon AVO dalam bentuk crossplot dari AVO gradient dan AVO intercept dari batuan tersebut. Hasil analisa pemodelan didapatkan bahwa pemodelan menggunakan Teori Gassmann memberikan kesalahan relatif rata-rata yang paling kecil dibanding dengan menggunakan Differential Effective Medium. Dari pemodelan respon AVO dapat diklasifikasikan bahwa batuan karbonat tersebut tergolong kelas I karena memiliki nilai AVO intercept yang positif dan AVO gradient yang negatif.
Permasalahan Ekonomi Sesungguhnya dalam Islam
Authors: Fadilla Fadilla
Published: November 2019

Inti dari masalah ekonomi yang kita pahami selama ini adalah kebutuhan manusia yang tidak terbatas sedangkan alat pemuas kebutuhan terbatas. Para ahli ekonomi konvensional menyebutnya sebagai masalah kelangkaan. Dalam Islam masalah ekonomi Islam permasalahan ekonomi adalah ditribusi yang tidak merata. Adapun tujuan dalam penelitian ini antara lain : Mengetahaui konsep permasalahan ekonomi dalam Islam, Mengetahui perbedaan permasalahan ekonomi dalam ekonomi Islam dan konvensional, dan Mengetahui cara mengatasi permasalahan ekonomi dalam Islam.

Permasalahan dalam ekonomi Islam adalah distribusi yang tidak merata sedangkan konvensional adalah kelangkaan. Solusi yang ditawarkan Islam antara lain: Masyarakat mempunyai hak khiyar. Hak khiyar adalah adalah salah satu ak bagi kedua belah pihak yang melakukan transaksi (akad) ketika terjadi beberapa persoalan dalam transaksi yang dimaksud. Hak Khiyar sendiri ada terbagi menjadi :Khiyar Tadlis (Membatalkan karanabarangnya cacat), Khiyar ‘aib (kurangnya nilai tersebut dikalangan ahli pasar. Khiyar Syarat (hakpilih) yang dijadikansyarat keduanya. Masyarakat menyelesaikannya dengan media al-shulhu (perdamaian).
Analisis Kebijakan Moneter pada Awal Pemerintahan Islam terhadap Pembangunan Perekonomian Islam
Authors: Amri Hoirul
Published: November 2019

Penelitian ini bertujuan untuk mengetahui bagaimana kebijakan Moneter pada awal Pemerintahan Islam dalam Pembangunan Ekonomi Islam. Metodologi penelitian ini termasuk jenis penelitian pustaka (library research). Hasil penelitian menunjukkan bahwa peletakan dasar-dasar sistem keuangan Negara (Moneter) yang dilakukan oleh awal Pemerintahan Islam sangat signifikan, cemerlang dan spektakuler pada waktu itu sehingga Islam sebagai Agama dan Negara dapat berkembang pesat. dalam waktu yang relatif singkat. Kemudian pengelolaan sistem moneter pada awal Pemerintahan Islam diserahkan kepada lembaga Baitul Mal dan dampak kebijakan moneter terhadap ekonomi pada permulaan berdampak terhadap kenaikan Agregate Demand sekaligus Agregate Supply.
Pengaruh Piutang Dagang dan Metode Pencatatan Hutang Piutang Terhadap Ketersediaan Modal Penjualan Dalam Perspektif Ekonomi Islam (Studi Kasus Toko Bahan Pokok Di Desa Nusamakmur Kecamatan Air Kumbang
Authors: Muharir Muharir
Published: November 2019

Penelitian ini menganalisis piutang dagang, dan metode pencatatannya dalam perspektif Islam. Penelitian ini bertujuan untuk menganalisis metode pencatatan hutang piutang terhadap ketersediaan modal penjualan dalam perspektif ekonomi Islam studi kasus toko bahan pokok di Desa Nusamakmur Kecamatan Air Kumbang. Metode yang digunakan adalah metode kuantitatif dan metode kualitatif yaitu metode kualitatif merupakan analisis non statistik yang membantu dalam penelitian. Data-data yang diperoleh baik yang berupa angka maupun yang berupa tabel kemudian ditafsirkan dengan baik sesui dengan data yang diperoleh sedangkan metode kuantitatif adalah analisa yang menggunakan bantuan statistik untuk membantu dalam penelitian dalam penghitungan angka-angka untuk menganalisis data yang diperoleh.Berdasarkan hasil penelitian diketahui metode pencatatan terhadap ketersediaan modal usaha penjualan toko bahan pokok Desa Nusamakmur Kecamatan Air Kumbang tidak sesuai dengan perspektif Islam.
MOTIVASI: TEORI DAN PERSPEKTIF DALAM EKONOMI ISLAM
Authors: Melis Melis
Published: November 2019

Meskipun proses motivasi individu telah dipelajari secara mendalam oleh para sarjana perilaku, namun seringkali terjadi salah pengertian dan simplikasi yang berlebihan, khususnya diantara manajemen operasional. Singkatnya, motivasi tidak dapat dibahas dengan cermat apabila masih dipahami sebagai suatu kepribadian yang dimiliki oleh sementara orang saja. Salah satu pihak secara pasif, motivasi tampak sebagai kebutuhan sekaligus sebagai pendorong yang dapat menggerakkan semua potensi, baik karyawan maupun sumber daya lainnya. Dilain pihak dari segi aktif, motivasi tampak sebagai suatu usaha positif dalam menggerakkan daya dan potensi karyarwan agar secara produktif berhasil mencapai tujuan. Berdasarkan pandangan diatas, motivasi dapat dirumuskan sebagai berikut; Pertama, Setiap perasaan atau kehendak dan keinginan sangat mempengaruhi kemauan individu sehingga individu tersebut didorong untuk berprilaku dan bertindak.Kedua, Pengaruh kekuatan yang menimbulkan perilaku individu. Ketiga, Setiap tindakan atau kejadian yang menyebabkan berubahnya perilaku seseorang. Keempat, Proses yang menentukan gerakan atau perilaku individu kepada tujuan (goal).
Sejarah Penggunaan Uang Sejak Masa Rasulullah SAW Sampai Sekarang
Authors: Fadilla Fadilla
Published: November 2019

Perkembangan teknologi telah mendorong kita untuk beradaptasi dalam segala hal termasuk dalam transaksi keuangan. Penelitian ini bertujuan untuk mengetahui macam-macam alat pertukaran dari masa Rasulullah SAW sampai sekarang yaitu era milenial. Metode penelitian yang digunakan adalah library research. Hasil penelitian ini menunjukkan bahwa pada masa Rasulullah pertukaran uang menggunakan emas dan perak (dinnar dan dirham) hal ini berlajut sampai pada masa khalifah dan Bani Umayah dan Abbasiyah. Pada Masa Fathimiyah dirhamdirham campuran banyak dijadikan uang. Pada masa Shalahudin Al-Ayyubi bahan baku emas sudah tidak mencukupi untuk pencetakan dinar hal ini disebabkan karena peperangan. Akhirnya pada saat perang dunia pertama tahun 1914 Turki dan negara-negara lainnya memberlakukan uang kertas sebagaialat pembayaran yang sah dan membatalkan berlakuknya uang emas dan perak. Pada masa sekarang dengan kecanggihan teknologi sudah banyak yang menggunakan uang elektronik (E-Money) dikarenakan lebih simpel dan mudah dalam penggunaannya.
Pengembangan Ekonomi Syariah terhadap Potensi Pariwisata Besar oleh Bank Indonesia
Authors: Zuhro Fatimatuz
Published: November 2019

Management of a large tourism industry based on sharia economy is one of the breakthroughs that attracts the attention of financial institutions to promote economic growth equally. Economic resources that must be supported by financial institutions to maintain economic equality are the trade, textile, electronics, agriculture and large tourism sectors. With that, without the support of Islamic financial institutions will not be implemented stable and equitable economic growth. The purpose of this research is to support the distribution of Islamic economics to the industrial sector which can create economic growth and maintain the stability of public financial inflation. The research method used by the author uses qualitative methods or literature research studies with the Indonesian Banking system approach to solving Islamic financial problems. The results of this study indicate that the development of the sharia economy to the industry's large tourism potential can be a development in opening access to economic growth and can create an increase in sharia-based economy and can maintain national financial inflation.
Witamina D u osób starszych - funkcje, ryzyko niedoboru i wiedza seniorów
Authors: Granda Dominika , Żyfka-Zagrodzińska Anna , Renc-Smolewska Paulina , Szmidt Maria , Wierzbicka Elżbieta , Brzozowska Anna
Published: November 2019

Witamina D pełni liczne funkcje w organizmie - o wielu z nich wiadomo od dawna, jednak stanowi ona obecnie przedmiot intensywnych badań naukowych, w związku z czym wciąż poznajemy jej nowe role. Osoby starsze to grupa szczególnie narażona na ryzyko niedoborów tej witaminy, głównie ze względu na fakt, że wraz z wiekiem obniża się wydajność syntezy skórnej. W artykule przedstawiono funkcje witaminy D w organizmie  z uwzględnieniem jej roli dla seniorów i na tym tle przeanalizowano dane o wiedzy osób starszych dotyczącej tej witaminy. W badaniu wzięło udział 230 osób w wieku 60-90 lat, spośród których większość stanowiły kobiety (73%). Stwierdzono, że wiedza osób starszych na temat źródeł, funkcji oraz ryzyka niedoborów jest niewystarczająca: 64% badanych osób charakteryzowało się niskim poziomem wiedzy, a jedynie 8% miało wysoki poziom wiedzy. Należy więc prowadzić edukację żywieniową w grupie osób starszych dotyczącą znaczenia i zapotrzebowania na witaminę D.

Słowa kluczowe - witamina D, osoby starsze, wiedza żywieniowa
Diety alternatywne, ich stosowanie w wybranych grupach osób oraz źródła informacji
Authors: Kołlajtis-Dołowy Anna , Jeruszka-Bielak Marta , Wawrzyniak Agata
Published: November 2019

Diety alternatywne tym różnią się od tradycyjnych, że wykluczają lub ograniczają określony produkt lub produkty. Diety alternatywne na ogół mają obniżoną wartość energetyczną i są spożywane w celu odchudzania. Wartość energetyczna powinna być obniżona wyłącznie kosztem tłuszczów (przede wszystkim) i węglowodanów. Prawidłowo ułożone diety mają zapewnioną odpowiednią ilość białka, witamin, składników mineralnych i błonnika pokarmowego. W rzeczywistości często wartość energetyczna jest niższa niż deklarowana i za mało jest takich składników jak białko, witaminy (B1,B2, kwas foliowy, B12 i wit. D) składniki mineralne głownie wapń, Mg, Fe, Zn). Głównym źródłem informacji o dietach od kilku lat jest internet, przedtem były rodzina, koledzy oraz masmedia. Diety i informacje z internetu trzeba traktować  z dużym krytycyzmem.

Słowa kluczowe: diety alternatywne, stosowanie diet, wartość odżywcza, źródła informacji
Wpływ sposobu żywienia na płodność kobiet i mężczyzn
Authors: Sawaniewska Barbara , Gajewska Danuta , Lange Ewa
Published: November 2019

Badania naukowe wskazują, że sposób żywienia w istotny sposób wpływa na płodność kobiet i mężczyzn w wieku rozrodczym. W niniejszym artykule dokonano przeglądu badań naukowych na temat zależności między spożyciem żywności a płodnością. Wykazano, że dieta śródziemnomorska jest optymalnym wzorcem dla diety wspomagającej płodność i leczenie niepłodności. Również dieta określona w badaniach naukowych jako „prudent pattern” wykazywała korzystne działanie, szczególnie u mężczyzn. Z kolei dieta typu zachodniego wykazywała działanie niekorzystne w zaburzeniach płodności u kobiet i mężczyzn.

Słowa kluczowe: dieta, płodność, dieta śródziemnomorska, dieta typu zachodniego, stres oksydacyjny, jakość parametrów nasienia
DLACZEGO JADY WĘŻY WYWOŁUJĄ KRWOTOKI? KRÓTKA HISTORIA METALOPROTEINAZ Z JADÓW WĘŻY
Authors: Hus, Konrad K. , Bocian Aleksandra
Published: November 2019

Każdego roku w wyniku ukąszeń węży na całym świecie umiera około 100.000 ludzi, a co najmniej cztery razy tyle zostaje poważnie okaleczonych. Do najczęstszych objawów obserwowanych po ugryzieniach przez węże z rodziny żmijowatych zalicza się m.in. krwotoki lokalne i ogólnosystemowe. Bezpośrednią przyczyną ich powstawania są metaloproteinazy z jadów węży (SVMPs) i niniejsza praca podsumowuje dotychczas zebraną wiedzę o tych białkach. Ponadto, prezentuje najnowsze hipotezy dotyczące przyczyn powstawania całego procesu, z uwzględnieniem mechanizmów zachodzących na poziomie molekularnym i makroskopowym. Artykuł opowiada również historię odkryć i postępów, które na przestrzeni lat stopniowo wzbogacały wiedzę, ostatecznie prowadząc do zrozumienia przyczyn i skutków aktywności krwotocznej metaloproteinaz z jadów węży.
Application Of Fuzzy-Logic In Ship Manoeuvring In Confined Waters
Authors: Surendran S. , Lee S. K
Published: November 2019

A ship manoeuvring problem is solved using an algorithm built on fuzzy logic. The manoeuvring model for a design ship is coded in C++ and the results are presented here. A bulk carrier is assumed as design ship for a newly setting up harbor along the east coast of India. The harbor mouth is 25 km away from the deep water zone. The approach channel is straight along the 22 km length. Laterally restricted and shallow waters are considered and their influences on hydrodynamic derivatives are discussed. Some sample problems are solved. Trajectories, ship heading, rudder angle, velocities and accelerations, of the moving vessel, are calculated and presented for clarity. The developed code is robust in the sense that any designer or user can easily interact with various input parameters to verify the outputs and their suitability for the design ship meant for a particular water front location. The results are validated using another algorithm built on PID which is discussed in brief.
COMPREHENSIVE BIBLIOMETRIC STUDY OF JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT FROM 2007 TO 2019
Authors: Xu Zeshui , Zhou Wei , Baltrėnaitė Edita
Published: November 2019

Since the world became industrialized, our environment has been changed, bringing different environmental issues. The world benefits from industrialization but suffers from diverse pollutions simultaneously. Therefore, we are motivated to investigate the environment and landscape management explorations by analyzing 403 papers published in the Journal of Environmental Engineering and Landscape Management (JEELM) from 2007 to 2019. As one of the scientific journals that investigate environment management, JEELM mainly focuses on the area of environmental changes caused by human activities. By analyzing the issues such as atmosphere, water, and soil pollution and their mitigation technologies, JEELM accepts the scientific outputs written in English. Based on the data retrieved from Web of Science, we provide an overview of the status quo and emerging trends of the researches published on JEELM. Diverse researches such as publication distribution, citation structure, co-citation analysis and key contributors on the aspects of countries, institutions, and authors are given to comprehensively analyze the current situation of JEELM’s. Besides, the emerging trends and hot spots can be revealed by burst detection and timeline view. Therefore, this paper contributes to providing a general picture of the knowledge domain of JEELM’ research which enables researchers, especially the beginners to learn about this journal’s development.
EVALUATION OF PORT EFFICIENCY IN SHANGHAI PORT AND BUSAN PORT BASED ON THREE-STAGE DEA MODEL WITH ENVIRONMENTAL CONCERNS
Authors: Huang Xiaoling , Wang Yawei , Dai Xiamei , Luo Jack Xunjie , Chen Jihong
Published: November 2019

The global green development has led many ports to impose measures to reduce emissions and improve port efficiency. As large-scale construction can do damage to the environment, it is not supported under the green strategy, which makes it more important to make full use of existing resources in the port competition. While, whether there is a relationship between emissions and port efficiency, and whether the relationship can reflect the problems in port management are vital factors need to be considered when making port development strategy. To solve the two problems, this paper takes the case of Shanghai Port and Busan Port, and uses the three-stage Data Envelopment Analysis (DEA) to evaluate the efficiency of the two ports respectively. Pollutant emissions from the ports are selected as an environmental variable in the second stage to examine their effects on the redundancy of input variables. The results indicate that the efficiency of Shanghai Port is insufficient due to excessive scale and pollutant emissions. Based on the results, some suggestions are given to improve the drawbacks. Furthermore, the use of the three-stage DEA to study the annual change in performance of a single target in this paper is also a novelty.
Taxonomic review of Gasterophilus (Oestridae, Gasterophilinae) of the world, with updated nomenclature, keys, biological notes, and distributions
Authors: Li Xin-Yu , Pape Thomas , Zhang Dong
Published: November 2019

A taxonomic review of Gasterophilus is presented, with nine valid species, 51 synonyms and misspellings for the genus and the species, updated diagnoses, worldwide distributions, and a summary of biological information for all species. Identification keys for adults and eggs are elaborated, based on a series of new diagnostic features and supported by high resolution photographs for adults. The genus is shown to have its highest species richness in China and South Africa, with seven species recorded, followed by Mongolia, Senegal, and Ukraine, with six species recorded.
Diversity and ochratoxin A-fumonisin profile of black Aspergilli isolated from grapes in China
Authors: Huang X. , Xiao Z. , Kong F. , Chen A.J. , Perrone G. , Wang Z. , Wang J. , Zhang H.
Published: November 2019

Aspergillus spp. are a common contaminant of grapes and a major source of mycotoxins. China is the largest producer of grape in the world now, however, the toxigenicAspergillus population on grape in this country is still largely unknown. In this study, a total of 345 strains were isolated from grapes of 13 main grapevine producing regions in China. Based on calmodulin gene sequences, eight species withinAspergillus sectionNigri were identified. Among them,Aspergillus tubingensis (48.7%) was predominant, followed byAspergillus welwitschiae (20.6%) andAspergillus aculeatinus (11%). Average of contamination level was up to 64.19%, and we found the occurrence of sectionNigri species on the surface of fresh grapes was significantly influenced by the climate (P<0.05). The subtropical monsoon climate showed the highest fungal detection rate (72.45%), followed by the temperate monsoon climate (49.82%), and the lowest frequency was found in the temperate continental climate (37.23%). Regarding mycotoxin-producing capacity, 4.4% of the total tested sectionNigri isolates (137) were positive for ochratoxin A (OTA) production and 59.6% were fumonisin B2 (FB2) producers. Of those,Aspergillus carbonarius was the main OTA producer andA. welwitschiae andAspergillus niger were the main FB2 producers with different toxigenic ability. Our results highlight the potential risk of OTA and FB2 contamination byA. carbonarius andA. welwitschiae on grape in China, respectively; management strategies should be considered for preventing and reducing the toxigenicAspergillus and its mycotoxins.
Semiparametric estimation of the canonical permanent‐transitory model of earnings dynamics
Authors: Hu Yingyao , Moffitt Robert , Sasaki Yuya
Published: November 2019

This paper presents identification and estimation results for a flexible state space model. Our modification of the canonical model allows the permanent component to follow a unit root process and the transitory component to follow a semiparametric model of a higher‐order autoregressive‐moving‐average (ARMA) process. Using panel data of observed earnings, we establish identification of the nonparametric joint distributions for each of the permanent and transitory components over time. We apply the identification and estimation method to the earnings dynamics of U.S. men using the Panel Survey of Income Dynamics (PSID). The results show that the marginal distributions of permanent and transitory earnings components are more dispersed, more skewed, and have fatter tails than the normal and that earnings mobility is much lower than for the normal. We also find strong evidence for the existence of higher‐order ARMA processes in the transitory component, which lead to much different estimates of the distributions of and earnings mobility in the permanent component, implying that misspecification of the process for transitory earnings can affect estimated distributions of the permanent component and estimated earnings dynamics of that component. Thus our flexible model implies earnings dynamics for U.S. men different from much of the prior literature.
Inference under covariate‐adaptive randomization with multiple treatments
Authors: Bugni Federico A. , Canay Ivan A. , Shaikh Azeem M.
Published: November 2019

This paper studies inference in randomized controlled trials with covariate‐adaptive randomization when there are multiple treatments. More specifically, we study in this setting inference about the average effect of one or more treatments relative to other treatments or a control. As in Bugni, Canay, and Shaikh (2018), covariate‐adaptive randomization refers to randomization schemes that first stratify according to baseline covariates and then assign treatment status so as to achieve “balance” within each stratum. Importantly, in contrast to Bugni, Canay, and Shaikh (2018), we not only allow for multiple treatments, but further allow for the proportion of units being assigned to each of the treatments to vary across strata. We first study the properties of estimators derived from a “fully saturated” linear regression, that is, a linear regression of the outcome on all interactions between indicators for each of the treatments and indicators for each of the strata. We show that tests based on these estimators using the usual heteroskedasticity‐consistent estimator of the asymptotic variance are invalid in the sense that they may have limiting rejection probability under the null hypothesis strictly greater than the nominal level; on the other hand, tests based on these estimators and suitable estimators of the asymptotic variance that we provide are exact in the sense that they have limiting rejection probability under the null hypothesis equal to the nominal level. For the special case in which the target proportion of units being assigned to each of the treatments does not vary across strata, we additionally consider tests based on estimators derived from a linear regression with “strata fixed effects,” that is, a linear regression of the outcome on indicators for each of the treatments and indicators for each of the strata. We show that tests based on these estimators using the usual heteroskedasticity‐consistent estimator of the asymptotic variance are conservative in the sense that they have limiting rejection probability under the null hypothesis no greater than and typically strictly less than the nominal level, but tests based on these estimators and suitable estimators of the asymptotic variance that we provide are exact, thereby generalizing results in Bugni, Canay, and Shaikh (2018) for the case of a single treatment to multiple treatments. A simulation study and an empirical application illustrate the practical relevance of our theoretical results.
Experimenting with the transition rule in dynamic games
Authors: Vespa Emanuel , Wilson Alistair J.
Published: November 2019

In dynamic environments where the strategic setting evolves across time, the specific rule governing the transitions can substantially alter the incentives agents face. This is particularly true when history‐dependent strategies are used. In a laboratory study, we examine whether subjects respond to the transition rule and internalize its effects on continuation values. Our main comparison is between an endogenous transition where future states directly depend on current choices, and exogenous transitions where the future environment is random and independent of actions. Our evidence shows that subjects readily internalize the effect of the dynamic game transition rule on their incentives, in line with history‐dependent theoretical predictions.
Quantile treatment effects in difference in differences models with panel data
Authors: Callaway Brantly , Li Tong
Published: November 2019

This paper considers identification and estimation of the Quantile Treatment Effect on the Treated (QTT) under a straightforward distributional extension of the most commonly invoked Mean Difference in Differences Assumption used for identifying the Average Treatment Effect on the Treated (ATT). Identification of the QTT is more complicated than the ATT though because it depends on the unknown dependence (or copula) between the change in untreated potential outcomes and the initial level of untreated potential outcomes for the treated group. To address this issue, we introduce a new Copula Stability Assumption that says that the missing dependence is constant over time. Under this assumption and when panel data is available, the missing dependence can be recovered, and the QTT is identified. We use our method to estimate the effect of increasing the minimum wage on quantiles of local labor markets' unemployment rates and find significant heterogeneity.