arulpm/triplet_large huggingface dataset:
Judul: Periodic Rebalancing of Kompas100 index stock portfolio During COVID-19 Pandemic
Abstrak: Pandemi COVID-19 merupakan peristiwa ekstrem yang mana terjadi dihampir seluruh belahan dunia. Pasar modal Indonesia pun turut terkena dampak COVID-19. Pada Bursa Efek Indonesia, terdapat kelompok saham yaitu Indeks Kompas100. Walaupun Kompas100 memiliki prospek pertumbuhan yang sangat baik, harga saham dari indeks tersebut tetap berfluktuatif yang diakibatkan oleh pergerakan pasar, maka dari itu, investor perlu melakukan rebalancing supaya portofolio Kompas100 mencapai kondisi yang optimum. Tujuan penelitian ini adalah untuk membentuk protofolio saham Kompas100 yang optimal berdasarkan Model Markowitz dan menganalisis strategi periodic rebalancing terhadap kinerja portofolio saham Kompas100 selama pandemi COVID-19. Jenis dan sumber data menggunakan data sekunder berupa data historis harga saham bulanan pada saham Kompas100 mulai Maret 2020 sampai Februari 2021. Berdasarkan hasil analisis dengan model Markowitz, portofolio optimal terdiri atas ASSA 11,25%; KLBF 24,6%; MIKA 24,06%; dan SIDO 40,07%. Disamping itu, monthly rebalancing adalah strategi yang paling optimum dalam meningkatkan return portofolio., The COVID-19 pandemic is an extreme event that has occurred in almost all parts of the world. The Indonesian capital market has also been affected by COVID-19. On the Indonesia Stock Exchange, there was a group of stocks, namely the Kompas100 Index. Although Kompas100 has a very good growth prospect, the stock price of the index is still reflective as a result of market movements, therefore, investors need to carry out rebalancing so that the Kompas100 portfolio can reach its optimum condition. The purpose of this study is to form an optimal Kompas100 stock portfolio based on the Markowitz Model and also to analyze the periodic rebalancing strategy on the performance of the Kompas100 stock portfolio during the COVID-19 pandemic. Types and data sources use secondary data in the form of historical data on monthly stock prices on Kompas100 shares from March 2020 to February 2021. Based on the results of the analysis using the Markowitz model, the optimal portfolio consists of ASSA 11.25%; KLBF 24.6%; MIKA 24.06%; and SIDO 40.07%. In addition, monthly rebalancing is the most optimal strategy for increasing portfolio returns.
Keyword: portfolio, rebalancing, return, risk, stocks
Judul: Efikasi Vaksin DNA Penyandi Glikoprotein Koi Herpesvirus pada Ikan Mas Stadia Benih melalui Perendaman
Abstrak: Koi herpesvirus (KHV) is a herpesvirus which especially infects and causes mass mortality to koi and common carp. Therefore the protection of carp from KHV infection is urgently needed. In this study, we developed an application of DNA vaccine containing gene encoding KHV glycoprotein by immersion method to increase survival of common carp against KHV infection. As many as 400 of 30-day-old common carp juveniles were immersed in the water containing 1.3 x 108 CFU/ml of the killed Escherichia coli cells carrying DNA vaccine. Treatments performed were variation of duration and frequency of DNA vaccine immersion; as follows: 1x 30 minutes, 1x 60 minutes, 1x 90 minutes, 2x 90 minutes, and 3x 90 minutes of immersion treatments. Reverse transcription polymerase chain reaction (RT-PCR) analysis showed that DNA vaccine was successfully expressed among the vaccinated fish. Twenty eight days post vaccination, the fish were challenged by injecting 10-4 ml/fish of KHV. The result demonstrated that vaccination by 30 minutes immersion; allowed the 61% of fish survived, this was significantly different (P<0.05) compared to control (without vaccination), but insignificantly different (P>0.05) compared to those of other treatments. The relative percent survival of vaccinated fish were also similar among different treatments (P>0.05). Vaccination by immersion have increased the survival rate about 2 fold compared to unvaccinated fish control (26.67%). Thus, DNA vaccine was effective delivered by immersion for 1x 30 minutes, and this technique can be useful to level up the resistance to KHV infection in common carp juveniles.
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Judul: Pengaruh Cara Pengendalian Gulma Terhadap Pertumbuhan dan Produksi Kedelai (Glicine max (L.) Merr.)
Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh cara pengendalian gulma, baik secara mekanis maupun secara kimia, terhadap pertumbuhan dan produksi tiga varietas kedelai, yaitu: varietas Kerinci, varietas Lokon dan varietas Amerikana. Rancangan penelitian yang digunakan yaitu rancangan petak terpisah dalam rancangan acak kelompok, dengan tiga ulangan. Sebagai petak utama yaitu varietas, terdiri atas: varietas Kerinci (V₁), varietas Lokon (V2) dan varietas Amerikana (V3). Sebagai anak petak yaitu cara pengendalian gulma, terdiri atas: tanpa penyiangan (Go), disemprot Bentazon 0.75 kg b.a./ha (G₁), disemprot Bentazon 1.50 kg b.a./ha (G2), disemprot Bentazon 3.00 kg b.a./ha (G3), disemprot Alachlor 1.44 kg b.a./ha (G4) dan disiang secara manual dua kali, yaitu pada 21 HST dan 42 HST (G5). Pe- ngolahan data dilakukan dengan menggunakan Uji Berganda Duncan, pada taraf kepercayaan 5 persen. Penyiangan gulma secara manual dua kali, yaitu pada 21 HST dan 42 HST, efektif mengendalikan gulma golongan rumput dan daun lebar; meningkatkan jumlah daun, indeks luas daun, jumlah buku subur, jumlah polong isi, indeks panen dan produksi biji kering/ha. Penyiangan secara ma- nual dua kali mampu mereduksi gangguan yang disebabkan oleh gulma, selama periode kritis tanaman. Penyiangan pertama (pada 21 HST) mampu mendukung pertumbuhan vegetatif tanaman, sedangkan penyiangan kedua (pada 42 HST) memberikan kesempatan pada tanaman untuk membentuk sekaligus mengisi polong tanpa mengalami persaingan yang berarti dengan gulma. Alachlor 1.44 kg b.a./ha tidak efektif mengendalikan gulma golongan rumput, teki maupun berdaun lebar. Walaupun demikian Alachlor mempunyai sifat merangsang pertumbuhan tanaman, sehingga mampu meningkatkan jumlah daun trifoliat, indeks luas daun, jumlah buku subur dan jumlah polong isi...
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Judul: Pengaruh Aplikasi Teh Guano, Cendawan Endofit, dan Insektisida terhadap Populasi Wereng Batang Cokelat (Nilaparvata lugens Stal.) di Bogor.
Abstrak: Pengendalian Hama Terpadu (PHT) Biointensif merupakan pendekatan PHT yang mengoptimalkan peran faktor pengendali alami biotik, seperti parasitoid, predator, dan patogen. Penelitian ini bertujuan untuk mengetahui pengaruh aplikasi teh guano, cendawan endofit, dan insektisida terhadap populasi wereng batang cokelat (WBC) di Bogor. Aplikasi teh guano, cendawan endofit, insektisida, dan kontrol dibandingkan. Populasi WBC dan predator diamati setiap dua minggu mulai dari 1 sampai 13 minggu setelah tanam (MST). Migrasi awal WBC terjadi pada saat tanaman padi berumur 1 MST. Terdapat dua puncak populasi WBC di semua petak perlakuan, yaitu saat tanaman padi berumur 5 MST dan 9 MST. Tidak ada perbedaan yang signifikan diantara sebagian besar pengamatan yang dilakukan, kecuali saat tanaman padi berumur 3 MST dan 7 MST. Populasi WBC tertinggi saat tanaman padi berumur 3 MST terdapat pada petak perlakuan teh guano. Populasi WBC tertinggi saat tanaman padi berumur 7 MST terdapat pada petak perlakuan kontrol. Tujuh spesies predator WBC ditemukan saat dilakukan penelitian. Lycosa sp. dan Paederus sp. adalah predator paling umum yang ditemukan di semua petak perlakuan. Simulasi perkembangan populasi WBC menunjukkan bahwa ekosistem di lokasi penelitian tergolong sehat yang menyebabkan populasi WBC tidak dapat berkembang. Populasi WBC yang rendah diduga menyebabkan pengaruh aplikasi perlakuan tidak terlihat secara nyata.
Keyword: ekosistem sehat, populasi WBC, predator, simulasi
Judul: Analysis of portfolio optimization with and without shortselling based on diagonal model: evidence from indonesian stock market
Abstrak: Markowitz (1952, 1959) and Roy (1952) proposed portfolio theory which narrate that risk of a portfolio is the variance of individual securities and covariances among those securities comprising the portfolio. The objectives of this research is to construct an optimized portfolio using Sharpe's diagonal model with and without short selling respectively, and to analyze the performance of less diversified optimal portfolios by investing in a single industry versus well diversified portfolio by investing across all industries. Finally to analysis the statistical properties of the estimates of diagonal model. Markowitz mean-variance portfolio optimization theory is implemented for all stocks listed in 9 sectors of Indonesian stock market during 2007-2011. However our model used 269 stocks which are not contradicting to the basic assumptions of the diagonal model. Diagonal model used in this research is a linear model and data used are time series secondary data. Firstly 9 optimal portfolios are computed for individual sectors with the assumption that short selling not permitted and then computation is done with assumption that short selling is permitted. Similarly 2 optimal portfolios are computed consisting of all stocks with assumptions mentioned above. Results showed that both well diversified short and long portfolios provide higher returns at a specified risk level compare to portfolios consist of individual sectors stocks. Largest weight in short portfolio is from infrastructure, utilities and transportation sector equaling 17.2 percent. Largest weight in long only portfolio are from trade, investment and services sector equaling 23.2 percent. The more diversified and larger portfolios provide better tangency portfolio. All stocks short and long portfolios performed better than any other individual sector portfolio. Standard error for and residual standard error for other portfolios are large compare to individual stocks indicating risk was not diversified away. Least square parameters estimates were not quite promising such as value of portfolio beta happened to be less than individual stocks as well as value of its coefficient of determination shows most of the systematic risk could not get eliminated as low values of R2 for portfolios shows that most of the variance in stock return as well as in portfolio return is not explained by market variance therefore unsystematic risk could not get eliminated despite of forming a portfolio encompassing all equities listed in Indonesian Stock Exchange as suggested by results of regression analysis.
Keyword: Diagonal Model, Diversification, Portfolio Optimization, Short Sales
Judul: Analysis of Competitiveness and Determinants of Exports of Indonesia's Leading Commodities to the African Region.
Abstrak: Kawasan Afrika merupakan pasar potensial bagi Indonesia. Palm oil & it's fraction, soap, fatty acid, dan uncoated paper adalah komoditas yang memiliki nilai ekspor tertinggi ke Afrika. Studi ini menganalisis daya saing menggunakan RCA, EPD, dan IIT, sementara faktor – faktor penentu ekspor menggunakan model Export Demand Function. Analisis ini dapat digunakan sebagai dasar untuk diversifikasi pasar ekspor dan produk ke wilayah Afrika. Analisis RCA menunjukkan bahwa semua komoditas dalam penelitian ini kompetitif di pasar Afrika karena nilainya lebih tinggi dari satu. Posisi pasar komoditas unggulan Indonesia dengan matriks EPD berada pada posisi yang berbeda – beda. Palm oil & it's fraction pada rising star, soap pada lost opportunity, sementara fatty acid dan uncoated paper pada retreat. Hasil IIT menunjukkan tingkat integrasi yang lemah kecuali palm oil & it's fraction yang tidak memiliki tingkat integrasi. Fungsi permintaan ekspor masing – masing komoditas berpengaruh signifikan terhadap nilai ekspor tahun sebelumnya, GDP riil per kapita, jarak ekonomi, harga ekspor riil, dan nilai tukar riil. Oleh karena itu, Indonesia harus meningkatkan nilai ekspornya ke kawasan Afrika dalam skema kesepakatan perdagangan bilateral.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Competitiveness, RCA, IIT, Export demand function, Market Position, GDP, Exchange Rate, Non Tarif Measures
Judul: Kajian pengelolaan ekosistem pesisir di sekitar kawasan reklamasi teluk Manado Provinsi Sulawesi Utara
Abstrak: Tujuan penelitian ini adalah menganalisis kondisi ekosistem pesisir di sekitar kawasan reklamasi teluk Manado, menganalisis pemanfaatan sumberdaya lingkungan pesisir di sekitar kawasan relamasi Teluk Manado, memberikan arahan strategis bagi pengelolaan pesisir di sekitar kawasan reklamasi Teluk Manado
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Judul: Pengaruh Aerasi terhadap Produksi Biopestisida oleh Pseudomonas putida Menggunakan Substrat Limbah Cair Tahu
Abstrak: Biopesticides is pesticide containing microorganism like bacteria, viruses, and fungal that are used to control pest. Biopesticides from endophitic bacteria are used to control nematode P. brachyurus. Endophitic bacteria are bacteria that colonize plant tissue without disturbing the plant. Pseudomonas putida is one of the endophitic bacteria that have the potency to control soil borne pathogen with antibiotics and siderophore from their activities. One of substrates that can be used as cultivation media is tofu waste. This waste come from filtration of soybean extract to make tofu through protein fractionation of soybean extract. This substrate contain organic material such as protein, fat, carbohydrate, and others which are useful for bacteria growth. One of the important factors for aerobic cultivation is aeration. The main function of aeration is as oxygen source to bacterial metabolism and homogenity on the medium. The objectives of this research are to produce biopesticides from Pseudomonas putida using tofu waste as substrate, and to determine aeration effect to bacteria biomass on production of biopesticides. The first step of this research is cultivation of medium test. The second step is preparation of inoculums using TSA (Tryptic soybean agar) and TSB (Tryptic soybean broth). After that the inoculums are cultivated on tofu waste substrate using bubble column bioreactor with aeration of 0,5, 1, 1,5 vvm. The parameters from this research are pH, OD (optical density), bacteria biomass dry weight, and residual sugar. The last step is toxicity test to nematode P. brachyurus. Completely randomized factorial design test with aeration as factor is used in this research The result showed that tofu waste can be used as substrate to P. putida growth to produce biopesticides. The highest biomass dry weight is 1,608 g/l which is obtained from cultivation with 1 vvm aeration after 36 hours and the lowest is 1,191 g/l from 0,5 vvm. The toxicity test of nematode P. brachyurus showed that the most effective treatment is using aeration 1 vvm. The percentage of nematode mortalitas is about 99%.
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Judul: Analisa peluang pengembalian kredit usahatani persuteraan alam di kabupaten Sukabumi
Abstrak: Dalam rangka membantu petani ulat sutera alam di bidang permodalan, pemerintah melalui Departemen Kehutanan memberikan kredit. Hal tersebut tertuang dalam Keputusan Menteri Kehutanan nomor: 50/KPTS-II/1997 tentang pendanaan dan usahatani persuteraan alam yang ditetapkan pada tanggal 20 Januari 1997. Kredit Usahatani Persuteraan Alam dimaksudkan untuk pemberdayaan perekonomian rakyat pedesaan. Namun demikian dalam beberapa bulan belakangan ini telah terjadi indikasi peningkatan tunggakan. Apabila terus menerus terjadi tunggakan pengembalian kredit pada akhirnya mempengaruhi kemampuan pemberi kredit untuk menyediakan kredit berikutnya. Tujuan yang ingin dicapai dari penelitian ini, yaitu: 1) Mengetahui sistem Kredit Usahatani Persuteraan Alam di Kabupaten Sukabumi; 2) Mengetahui keragaan dari Kredit Usahatani persuteraan Alam di Kabupaten Sukabumi; 3) Mengetahui faktor- faktor yang mempengaruhi dan pesentase peluang tunggakan pengembalian KUPA para petani responden. Pemilihan lokasi penelitian dilakukan secara sengaja (purposive) dengan pertimbangan bahwa Kabupaten Sukabumi merupakan sentra sutera alam terbesar di Jawa Barat. Dipilih 4 kecamatan yaitu; Kecamatan Sukaraja, Kecamatan Kadudampit. Kecamatan Nagrak dan Kecamatan Cibadak. Jumlah keluarga petani sebagai unit contoh sebanyak 31 orang petani. Analisis peluang pengembalian dicari dengan menggunakan model logit. Sistem Kredit Usahatani Persuteraan Alam di Kabupaten Sukabumi dapat dilihat dari dua kegiatan utama, yaitu penyaluran dan pengembalian kredit. Sistem penyaluran Kredit Usahatani Persuteraan Alam terdiri dari beberapa tahapan, yaitu: 1) Sebagai koordinator peserta Kredit Usahatani Persuteraan Alam Mitra Usaha membuat dan mengajukan permohonan KUPA, ditujukan kepada Direktur Jenderal Reboisasi dan Rehabilitasi Lahan: 2) Persetujuan atau penolakan kredit. berdasarkan rekomendasi Kepala Kantor Wilayah Departemen Kehutanan setempat dan Bupati Kepala DT. II serta mempertimbangkan teknik lainnya, Direktur Jenderal Reboisasi dan Rehabilitasi Lahan menyetujui atau menolak permohonana kredit tersebut; 3) Berdasarkan surat persetujuan atau penolakan Kredit Usahatani persuteraan alam dari Direktur RRI.. mitra usaha dapat memproses penarikan Kredit Usahatani Persuteraan Alam. …dst
Keyword: petani sutera, kredit usahatani, budidaya murbei, budidaya ulat sutera, pemasaran kokon
Judul: Fuel Needs for Fishing Vessels at Palabuhanratu Nusantara Fishing Port
Abstrak: Fasilitas penyediaan Bahan Bakar Minyak (BBM) seperti Instalasi Bahan Bakar Minyak merupakan salah satu fasilitas fungsional pelabuhan perikanan. Namun nelayan masih kesulitan dalam mengakses BBM dengan harga normal dan stok yang tersedia tidak pasti. Tujuan penelitian ini yaitu mengidentifikasi jenis dan menghitung jumlah BBM yang dibutuhkan kapal perikanan di Pelabuhan Perikanan Nusantara (PPN) Palabuhanratu, mengidentifikasi jenis dan menghitung jumlah BBM yang disediakan penyalur BBM resmi, serta menentukan persediaan kebutuhan BBM dan merekomendasikan distribusi BBM yang baik bagi nelayan di PPN Palabuhanratu. Metode analisis yang digunakan yaitu analisis deskriptif dan analisis matematika sederhana. Hasil penelitian menunjukkan bahwa nelayan PPN Palabuhanratu membutuhkan BBM jenis solar dan bensin. Kebutuhan solar subsidi oleh kapal ≤ 30 GT sebesar 533.398 liter selama satu tahun. Kebutuhan solar industri sebanyak 2.556.000 liter dalam setahun. BBM jenis bensin yang dibutuhkan sebesar 233.034 liter dalam setahun. Rekomendasi untuk pendistribusian BBM yang lebih baik adalah melakukan penyederhanaan administasi perikanan agar mudah dalam mengakses BBM subsidi (satu identitas multifungsi), menggunakan perhitungan hasil penelitian untuk referensi kuota BBM dan membuka informasi akses kuota ketersediaan BBM untuk sektor perikanan pada setiap tempat pengisian BBM di sekitar PPN Palabuhanratu, dan membuat mekanisme terstruktur dan pengawasan ketat untuk pembelian BBM subsidi dan non subsidi., Facilities for providing fuel, such as installation of fuel is one of the functional facilities of fishing ports. Fishermen still have difficulty in accessing fuel at normal prices and the available stock is uncertain. The purposes of this study are to identify the type and calculate the amount of fuel needed by fishing vessels at the NFP Palabuhanratu, identify the type and calculate the amount of fuel provided by official fuel distributors, and determine the supply of fuel needs and recommend a good distribution of fuel for fishermen in NFP Palabuhanratu. The analytical method used was descriptive analysis and simple mathematical analysis. The results showed that fishermen in NFP Palabuhanratu needed diesel and gasoline. The need for subsidized diesel by ships ≤ 30 GT were 533.398 liters a year. Industrial diesel needs as much as 2.556.000 liters in a year. The type of gasoline needed were 233.034 liters in a year. Recommendations for better fuel distribution are simplifying fisheries administration so that it is easy to access subsidized fuel (one multifunctional identity), using research results calculations to reference fuel quotas and opening information on fuel availability quota access for the fisheries sector at each official fuel distributors around NFP Palabuhanratu, and create a structured mechanism and strict supervision for the purchase of subsidized and non-subsidized fuel.
Keyword: fuel, gasoline, fishing vessels, NFP Palabuhanratu, diesel fuel
Judul: Haploidization through androgenesis and gynogenesis on carnation (Dianthus sp.).
Abstrak: Haploidization technology ensures important advantages in obtaining pure lines by rapid fixation of homozygosity. Anther culture, ovule culture, ovary culture and irradiated pollen technique were used in this study. The objective of the research was to develop appropriate haploid technology in order to obtain haploid plants through androgenesis, gynogenesis by ovule culture and ovary culture and pseudofertilization on Dianthus chienesis. Androgenic callus was induced in four WT basic medium inductions supplemented with 2.4D, NAA, TDZ and BA. Four explants originated from ovule and ovary cultures of six genotypes of D. chinensis (Dchi-11, Dchi-12, Dchi-13, Dchi-14, Dchi-15 and Dchi-16) were applied in five media. For the parthenogenesis induction, 100-200 Gray gamma irradiations were applied to the Dchi-14 pollens and pollinated to the Dchi-11. Pollinations were conducted on the day after irradiation. Eight media were selected to obtain regenerated plants. Results showed that androgenic callus formation needed high auxin and sitokinin ratio, while regenerated callus required lower auxin and sitokinin ratio. 2,4-D was better than NAA in callus induction. Callus originated from anther culture, multi ovule slice culture, ovule culture and ovary slice culture regenerated producing early flowering plants and expressed of abnormal flowering mutant. Regeneran from anther culture was diploid, but two putative double haploids came up from multi ovule slice culture and ovary culture. Cytology and flow cytometry observations showed that seven haploid plants were obtained from pseudofertilization. Spontaneous chromosome doubling was inferred to have occurred during the callus culture period. In conclusion, gynogenesis through multiovule culture, ovary slice culture and pseudofertilization was more effective in inducing haploid and double haploid plants than androgenesis.
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