this research aimed to analyze the impact of stock market capitalization and macroeconomic variables on indonesia Composite index (iCi) and formulate recommendations of strategies to enhance stock market capitalization. the analysis of macroeconomic data variables covered the inflation rate, oil price, gold price, and Hang Seng Index from 2008 to 2017. the model used in this research was error Correction Model (eCM) and analytical hierarchy process (ahp). the results showed that in general, all independent variables in the long run had a positively significant impact, except for inflation which had a negatively significant impact. In short run, stock market capitalization, inflation, world oil price, and HSI had a significant impact, while gold price had an insignificant impact. Stock market capitalization and HSI had a positive impact, while inflation and world oil price had a negative impact. Error Correction Term coefficient had an impact of-0.207329 with a negatively significant direction at the significance level of 5%. It showed that the adjustment mechanism process in the long run equilibrium lasted for 5 quarters. stock market capitalization and hsi had a positive impact, while inflation and world oil price had a negative impact. Stock market capitalization, both in short and long run, had a positively significant and more dominant impact than that of macroeconomic variables. in consequence, a strategy to enhance stock market capitalization in idX is required. Based on the results of ahp vertical analysis, factors that become a priority in the strategy is the policy (monetary and capital markets). the recommended alternative strategy encourages the increase in large cap stock investments.
Abstrak. DAS Citanduy merupakan salah DAS yang terbesar di pulau Jawa dengan sungai utama adalah Cintanduy. DAS Citanduy terdiri dari beberapa sub DAS, salah satunya adalah sub DAS Citanduy Hulu. Perubahan tata guna lahan di DAS Citanduy Hulu terus terjadi, kondisi tsb telah mengakibatkan peningkatan debit banjir di sungai. Peningkatan debit di sungai diakibatkan adanya limpasan permukaan akibat hujan. limpasan permukaan dapat dianalisis menggunakan metode SCS (Soil Conservation Service). Metode SCS juga dianalisis berdasarkan kondisi tanah, sehingga dapat menentukan nilai Curve Number (CN) dari lahan. Hasil analisis tahun 2018, menunjukkan bahwa tutupan lahan 18,99% atau 13.735,97 ha berupa hutan (hutan primer, sekunder dan hutan tanaman). Sebaran jenis tanah di umumnya adalah Typic Dystrudepts (36,57%) dan Typic Hapludands (37,93%). Hydrological Soil Group (HSG) di DAS Citanduy Hulu didominasi oleh klas B sebesar 76, 92 %. Hasil analisis didapatkan bahwa DAS Citanduy Hulu tebal runoff maksimum pada PUH 2, 5, 10, 25, dan 50 tahun secara berurutan adalah 104 mm, 133 mm, 147 mm, 171 mm dan 187 mm. Tebal limpasan permukaan minimum dengan PUH 2, 5, 10, 25 dan 50 tahun secara berurutan adalah 17 mm, 31 mm, 39 mm, 53 mm dan 64 mm. Tebal limpasan permukaan menunjukkan potensi peningkatan debit banjir.Analysis And Mapping Runoff In Watershed Upper Citanduy With SCSN MethodAbstract. Citanduy watershed is one of the largest watersheds on the island of Java with the main river being Cintanduy. The Citanduy watershed consists of several sub-watersheds, one of which is the Upper Citanduy sub-watershed. Changes in land use in the Upper Citanduy watershed continue to occur, this condition has resulted in an increase in flood discharge in the river. The increase in discharge in the river is caused by surface runoff due to rain. Surface runoff can be analyzed using the SCS (Soil Conservation Service) method. The SCS method is also analyzed based on soil conditions so that it can determine the Curve Number (CN) value of the land. The results of the 2018 analysis show that 18.99% or 13,735.97 ha of land cover is forest (primary, secondary and plantation forests). The distribution of soil types, in general, is Typic Dystrudepts (36.57%) and Typic Hapludands (37.93%). Hydrological Soil Group (HSG) in the Upper Citanduy watershed is dominated by class B by 76.92%. The results of the analysis showed that the maximum runoff thickness of the Upper Citanduy Watershed at PUH 2, 5, 10, 25, and 50 years respectively was 104 mm, 133 mm, 147 mm, 171 mm, and 187 mm. The minimum surface runoff thickness with PUH 2, 5, 10, 25, and 50 years respectively is 17 mm, 31 mm, 39 mm, 53 mm, and 64 mm. The thickness of the surface runoff indicates the potential for increased flood discharge.
Meniran (Phyllanthus niruri Linn.) extract is known to be a source of antioxidants and non-toxic. The content of antioxidants in meniran is donated by tannin. The use of meniran (Phyllanthus niruri Linn.) extract as an herbal medicine has been widely used. Meniran (Phyllanthus niruri Linn.) can be brewed as tea and made into a drink, but the content of antioxidants in meniran tea is not widely known. The use of meniran (Phyllanthus niruri Linn.) tea can directly avoid the effects of residual solvents on extracting. The purpose of this study is to determine the type of tannin and tannin content in meniran (Phyllanthus niruri Linn.) tea with the permanganometry method. Meniran tea (Phyllanthus niruri Linn.) was made by washing and drying at room temperature. Meniran (Phyllanthus niruri Linn.) was collected from grass or roadside in the Tasikmalaya Regency. The research were conducted at the Basic Laboratory of the Faculty of Health Sciences, Siliwangi University. The results of the qualitative analysis showed that tannins contained in meniran tea are included in a group of hydrolyzed tannins with tannin content of catechol complex. The tannin content contained in 1 gram of meniran tea is 7.56 mg (7.56%).
Rice straw is a byproduct that can be obtained in abundance after the harvesting of Oryza sativa with approximately 932 million of rice straw that could be produced worldwide (Kadam et al., 2000). Rice straw mainly composed of cellulose (32-47%), hemicellulose (19-27%) and lignin (5-24%) (Karimi et al., 2006;
PDAM Tirta Galuh Cabang Ciamis merupakan salah satu cabang pelayanan air bersih dari PDAM Tirta Galuh Ciamis. Air bersih menjadi kebutuhan utama bagi manusia yang harus diprioritaskan dan dipenuhi baik di perkotaan maupun di pedesaan. Pertumbuhan penduduk setiap tahun meningkat mengakibatkan permintaan kebutuhan air bersih menjadi bertambah dan juga dapat berpengaruh pada sistem hidrolis jaringan perpipaan. Penelitian ini bertujuan menganalisis proyeksi kebutuhan air bersih sampai dengan tahun 2024 pelanggan PDAM Tirta Galuh Cabang Ciamis, menganalisis kondisi sistem hidrolis jaringan pipa distribusi air bersih tahun 2020 dan 2024 PDAM Tirta Galuh Cabang Ciamis dan menganalisis kehilangan tinggi tekan pada sistem jaringan pipa PDAM Tirta Galuh Cabang Ciamis. Penelitian dilakukan dengan menganalisis proyeksi penduduk, proyeksi kebutuhan air bersih sampai dengan tahun 2024. Analisis jaringan pipa distribusi paa tahun 2020 dan 2024 menggunakan software WaterCAD V8i dengan kondisi tidak permanen (EPS) dan waktu simulasi 24 jam dengan interval 1 jam yang mengacu pada Permenpu No. 18 Tahun 2007. Hasil dari analisis, kebutuhan air jam puncak pada tahun 2024 tidak dapat memenuhi permintaan pelanggan sejumlah 62880 jiwa. Kebutuhan air bersih tersebut melebihi kapasitas produksi. Hasil akhir simulasi menggunakan software WaterCAD V8i saat kondisi jam puncak pukul 07.00 WIB pada tahun 2020 dan 2024, terdapat 593 buah dan 604 buah pipa dengan kecepatan bermasalah, 171 buah dan 240 buah pipa dengan headloss gradient bermasalah serta 904 buah dan 908 buah junction dengan tekanan bermasalah. Hasil kehilangan tinggi tekan akibat gesekan didapatkan total kehilangan tinggi tekan pada tahun 2020 dan 2024 sebesar 2155,690 m dan 2149,224 m dengan total panjang pipa 159809 m. Kata Kunci: air bersih, jaringan pipa distribusi, WaterCAD V8i, saluran tertutup.
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