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All Journal Jurnal Matematika UNAND Jurnal Abdimas Indonesia Journal of Islamic Economics and Finance Journal Economic Excellence Ibnu Sina
Helen Parkhurst
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Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Other

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PELABELAN TOTAL ( a, d) -SISI ANTI AJAIB SUPER PADA GABUNGAN GRAF LENGKAP mK n Helen Parkhurst
Jurnal Matematika UNAND Vol 3, No 4 (2014)
Publisher : Jurusan Matematika FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmu.3.4.24-27.2014

Abstract

Misalkan G adalah suatu graf dengan banyak titik p dan banyak sisi q. Pelabelan total (a, d)-sisi antiajaib dari graf G adalah suatu fungsi bijektif f : V(G)∪E(G) →{1, 2, · · · , p + q} sedemikian sehingga bobot sisi w(u, v) = f(u) + f(uv) + f(v) denganuv ∈ G membentuk barisan aritmatika dengan suku awal a dan beda d. Suatu pelabelantotal graf G dikatakan super jika f(V) = {1, 2, · · · , p}. Tulisan ini mengkaji kembali tentang pelabelan total (a, d)-sisi antiajaib super pada gabungan graf lengkap mKn untukn ≥ 3 dan m ≥ 3, seperti yang telah diperoleh dalam [1].
Potensi Dan Prospek Industri Gula Aren Di Indonesia Putri Intan Suri; Faradina Zevaya; Helen Parkhurst
Journal of Islamic Economics and Finance Vol. 2 No. 2 (2024): Mei: Journal of Islamic Economics and Finance
Publisher : STIKes Ibnu Sina Ajibarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59841/jureksi.v2i2.1462

Abstract

Palm sugar produced from sugar palm plants is an alternative sugar to granulated (refinery) sugar produced from sugar cane plants. Recently, more and more consumers are switching from granulated sugar to palm sugar. However, because entrepreneurs are still traditional, efforts to meet changing consumer tastes still have many obstacles. This research aims to (1) determine the potential of sugar palm plants as; (2) analyze the prospects for the Indonesian small palm sugar industry in the future. The method for determining the research location was carried out purposively, namely the Republic of Indonesia, which is one of the largest palm sugar producers in the world. This research was carried out from March 2024 to May 2024. This research was carried out using a survey approach and used secondary data, especially BPS publication data. To find out the prospects for palm sugar in Indonesia, it is explained using simple linear regression. Meanwhile, the analysis of plant potential is explained descriptively qualitatively and quantitatively. The research results show that sugar palm cultivation in Indonesia has great potential, especially because sugar palm plants do not require complicated growing requirements. Almost all areas in Indonesia can be planted with palm trees. The availability of land in Indonesia is quite extensive, has hydrological and conservative functions. There is a traditional farming culture in cultivating palm sugar. The results of regression analysis using time series data from 1992 to 2020 show that the development of land area, which is a manifestation of farmers' response to demand for palm sugar, shows an increasing trend. With ß of 1,046.5, it shows that on average every year there is an increase in the area of ​​sugar palm plantations of 1,046.5. Meanwhile, from the production aspect, the results of the regression analysis also show a significant increasing trend with ß of 2,575.4, which shows that from the production aspect there has been a significant increase in production, namely 2,575.4 tonnes each year. Furthermore, it can be concluded that the potential for palm tree development is quite good and the prospects for the palm sugar industry in Indonesia are quite bright.
Analisis Karakteristik Kekeringan Di Nusa Tenggara Menggunakan Pengukuran Return Period Helen Parkhurst
Journal Economic Excellence Ibnu Sina Vol. 1 No. 4 (2023): Desember : Journal Economic Excellence Ibnu Sina
Publisher : STIKes Ibnu Sina Ajibarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59841/excellence.v1i4.888

Abstract

Sektor pertanian, terutama produksi tanaman pangan merupakan pilar perekonomian di Indonesia dengan sentra produksi berada di Nusa Tenggara. Salah satu penyebab penurunan produksi tanaman pangan adalah kekeringan yang disebabkan oleh perubahan iklim. Kekeringan dapat dihitung dengan Standardized Precipitation Index yang merupakan indeks untuk mengukur tingkat keparahan kekeringan suatu wilayah. Tingkat keparahan kekeringan suatu wilayah dapat mencapai nilai tertinggi yang dapat digunakan untuk memperkirakan periode kejadian kekeringan yang terjadi secara berulang. Selanjutnya hasil estimasi tersebut dapat digunakan untuk memperoleh nilai Return Period yang merupakan rata-rata waktu kekeringan yang terjadi dengan menentukan keparahan kekeringan maksimum. Untuk mengantisipasi kekeringan yang terjadi secara berulang, tujuan dari penelitian ini adalah melakukan identifikasi karakteristik kekeringan dari Return Period berdasarkan profil geografis Nusa Tenggara. Data yang digunakan adalah data observasi curah hujan bulanan selama periode tahun 1985 sampai 2014 yang menggambarkan kejadian kekeringan yang telah terjadi untuk masa sekarang dan data skenario curah hujan bulanan selama periode tahun 2016 sampai 2100 berdasarkan Representative Concentration Pathways yang menggambarkan iklim di masa akan datang. Hasil analisis data menunjukkan bahwa Return Period secara geografis memberikan gambaran untuk berbagai wilayah. Pada wilayah karakteristik iklim lebih basah terlihat adanya pengurangan curah hujan, sedangkan wilayah karakteristik iklim lebih kering tidak mengalami pengurangan curah hujan yang signifikan. Secara umum dapat diketahui bahwa beberapa tahun ke depan prediksi kekeringan Pulau Nusa Tenggara menunjukkan tingkat keparahan kekeringan yang tidak terlalu parah dengan periode berulang yang lebih sering terjadi.
Modernisasi dan Inovasi Pengelolaan Sampah Berbasis Masyarakat di Desa Sumur Gedang Kota Sungai Penuh, Kerinci Fitri Widiastuti; Riski Hernando; Rafiqi; Hendriyaldi; Dwi Hastuti; Helen Parkhurst
jurnal ABDIMAS Indonesia Vol. 2 No. 1 (2024): Maret : Jurnal ABDIMAS Indonesia
Publisher : STIKes Ibnu Sina Ajibarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59841/jurai.v2i1.1463

Abstract

Partners in this PPM activity are Village Apparatus and several community representatives of Sumur Gedang Village, Sungai Full City, Kerinci. Based on the analysis of the situation, the main problem faced by partners today lies in the phenomenon of waste which continues to increase in volume which causes environmental pollution, especially related to cleanliness and health. The increasing population and community activities greatly affect the increasing volume of waste in rural areas. Various kinds of pollution that occur due to piles of garbage so that the impacts caused include environmental damage, changes in health conditions. Support, participation and awareness from various parties, especially waste management drivers, is one of the keys to the success of good waste management. Based on these problems, through this activity, several solutions to solve problems will be provided. The method of implementing activities uses a participatory approach through training and mentoring activities, with measurable achievement targets. The results of PPM activities that have been carried out are obtained as a result of the PPM team has carried out all forms of training and simple practices to partners including in making natural compost by utilizing leftover vegetable pieces from households that can be used as natural fertilizer to fertilize the soil. In addition, the team practiced processing plastic waste to be used as handicrafts and other products which are expected to be attractive and can be resold in the future.
Co-Authors Alberth Cristian Ambarita Ali Syahbana Siregar DWI HASTUTI Etik Umiyati Faradina Zevaya Hendriyaldi Heriberta Heriberta Rafiqi Riski Hernando Suri, Putri Intan Widiastuti, Fitri