Judul: Function and Aesthetic Aspect Assessment of Greenery in Iman Sitinjo Tourism Park Dairi Regency North Sumatra
Abstrak: Tanaman sebagai komponen paling dominan pada tata hijau Taman Wisata Iman Sitinjomenjadi indicator kondisi tata hijau taman. Tata hijau memiliki fungsi arsitektural, meningkatkan kualitas lingkungan, ameliorasi iklim dan pemberi nilai estetika.Tujuan penelitian ini yaitu menganalisis fungsi, estetika, persepsi dan preferensi masyarakat terhadap tata hijau Taman Wisata Iman Sitinjo dan menyusun rekomendasi untuk peningkatan kualitas tata hijau yang dapat diterapkan di lokasi penelitian. Penelitian ini dilakukan di empat taman, yaitu Taman Vihara, Taman Gereja, Taman Pura, dan Taman Miniatur Ka’bah dalam Taman Wisata Iman Sintinjo.Untuk menganalisis fungsi tata hijau digunakan metode skoring dari pencapaian kriteria dari tiap fungsi tanaman sebagai pembatas visual, kontrol kesilauan, peneduh dan penahan erosi.Metode yang diterapkan untuk menganalisis kualitas estetika lanskap adalah Scenic Beauty Estimation (SBE) dan skala likert untuk menganalisis persepsi dan preferensi responden terhadap fungsi tata hijau. Berdasarkan hasil identifikasi terdapat 41 spesies tanaman dan memiliki nilai keragaman Shannon-Wiener rata-rata rendah dengan nilai 0,16. Nilai dominansi tanaman beragam di antara taman. Nilai dominansi pohon tertinggi (19.6%) ditemukan pada Taman Vihara. Hasil penilaian aspek fungsi menunjukkan kategori buruk dengan nilai rata-rata 57,56%. Berdasarkan penilaian, Taman Gereja, Taman Pura, dan Taman Miniatur Ka’bah termasuk kategori buruk sehingga diperlukan perbaikan dan peningkatan pada aspek fungsi.Penilaian aspek estetika menunjukkan kualitas estetika tinggi pada Taman Vihara dengan nilai 88.Hasil penelitian menunjukkan bahwa persepsi pengunjung terhadap kualitas taman secara keseluruhan cukup puas dengan nilai rata-rata sebesar 3,92. Preferensi pengunjung menunjukkan lebih baik ditambahkan tanaman peneduh dan tanaman produktif pada taman., Plants as the most dominant component in the greenery in Iman Sitinjo Tourism Park are an indicator that reveal the condition of the park's greenery. The greenery has various functions incluiding climate amelioration,improving environmental quality, architectural and aesthetic uses. The purpose of this research is to analyze function and aesthetic aspect of greenery,,people’s perception and preferences about the Iman Sitinjo Tourism Park’s greenery, as well as to provide recommendations for increasing the quality of greenery that can be applied to research sites. The research was conducted in four different parks: Vihara Park, Church Park, Temple Park,Ka’bah Miniature Park in Iman Sitinjo Tourism Park. To assess the greenery, a scoring method is used based on the fulfillment of the criterion for each plant function as a visual barrier, glare control, shade, and erosion control. The Scenic Beauty Estimation (sbe) was used to analyze the aesthetic quality of the landscape, and the Likert scale was used to analyze the perception and preference of visitor respondents to greenery function. Based on the identification findings, there are 41 plant species with a low average Shanon-Wiener diversity value of 0,16. Plant Dominance value varied among the park. In the case of tree, the highest value of 19.6% found in Vihara park.The result of the assessment on the function component showed a bad category with an average score of 57,56%. Based on assessment, Church Parks, Temple Parks, and Ka’bah Miniatur Parks, indicating that functional features require improvement. Aesthetic aspects have high aesthetic quality in Temple Park with a score of 88. Visitors' perception of the park’s overall quality was highly satisfied, with an average score of 3,92. Visitor’s preference
Keyword: greenery, visual quality, thematic park

Judul: Evaluation of the Suitability of Ecological
and Aesthetic Functions of Two Program Pengembangan Kota Hijau Parks in
Bekasi City
Abstrak: Kota Bekasi mengalami penurunan kualitas lingkungan akibat kepadatan penduduk dan pembangunan infrastrukturnya. Taman sebagai ruang terbuka hijau dapat membantu mengatasi permasalahan ini. Taman Hijau Pekayon dan Taman Bantargebang merupakan salah satu hasil dari Program Pengembangan Kota Hijau di Kota Bekasi yang sudah diresmikan cukup lama. Penelitian ini bertujuan untuk mengidentifikasi jenis dan fungsi tanaman, mengevaluasi fungsi ekologis dan estetika, serta memberikan rekomendasi perbaikan pada kedua taman tersebut. Metode analisis KPI dan THI digunakan untuk menilai fungsi ekologis, sementara metode SBE digunakan untuk menilai fungsi estetika taman. Persepsi pengunjung juga dijadikan sebagai bahan pembanding dari hasil analisis yang dilakukan. Hasil penelitian menunjukkan bahwa Taman Hijau Pekayon memiliki 17 spesies tanaman dengan 61 individu, sedangkan Taman Bantargebang memiliki 16 spesies dengan 60 individu. Secara keseluruhan, Taman Hijau Pekayon memiliki fungsi ekologis yang lebih baik, sementara Taman Bantargebang lebih baik dalam fungsi estetikanya. Rekomendasi yang difokuskan dari fungsi ekologis pada kedua taman mencakup penambahan strata tanaman di tepi taman untuk meningkatkan fungsi penahan angin dan peredam bising serta penambahan tanaman penaung untuk menurunkan nilai THInya. Rekomendasi penambahan tanaman display dan fasilitas diberikan untuk meningkatkan estetika pada lanskap dengan nilai SBE rendah. Rekomendasi dibuat dengan gambar ilustrasi dan deskripsi pada kedua taman., Bekasi City is experiencing a decline in environmental quality due to population density and infrastructure development. Parks as green open spaces can help overcome this problem. Taman Hijau Pekayon and Taman Bantargebang are one of the results of the Program Pengembangan Kota Hijau in Bekasi City which has been inaugurated for a long time. This study aims to identify the types and functions of plants, evaluate ecological and aesthetic functions, and provide recommendations for improvements to the two parks. The KPI and THI analysis methods were used to assess the ecological function, while the SBE method was used to assess the aesthetic function of the park. Visitors' perceptions are also used as a comparison of the results of the analysis conducted. The results showed that Taman Hijau Pekayon has 17 plant species with 61 individuals, while Taman Bantargebang has 16 species with 60 individuals. Overall, Taman Hijau Pekayon has a better ecological function, while Taman Bantargebang is better in its aesthetic function. Recommendations focused on ecological functions in both parks include the addition of plant strata at the edge of the park to improve its windbreak and noise-canceling functions and the addition of shade plants to reduce its THI value. Recommendations for the addition of display plants and facilities were given to improve aesthetics in landscapes with low SBE scores. Recommendations were made with illustrative drawings and descriptions of both parks.
Keyword: Evaluasi, ekologis, estetika

Judul: Mathematical model of Hematopoietic Stem Cell in Chronic Myelogenous Leukemia with and without Therapy
Abstrak: Leukemia or blood cancer is a diverse group of neoplastic disease, characterized by the multiplication of abnormal leukocytes or malignant transformation of blood-forming cells in bone marrow and lymphoid tissues. One of the most common types of leukemia is Chronic Myelogenous Leukemia (CML), which is usually diagnosed by the presence of certain chromosomal abnormalities, the so-called Philadelphia chromosome (Ph). One of the treatments of CML is Granulocyte Colony-Stimulating Factor (G-CSF). In this paper, we discuss two Hematopoietic Stem Cell (HSC) models, i.e. HSC without treatment and HSC with G-CSF treatment. The model of HSC without treatment included three equations representing the dynamics of HSC, leukocyte and platelet. Whereas, the model of HSC with G-CSF treatment includes the previous three equations and adds two more equations representing G-CSF injection and G-CSF circulation. The stability behavior of the system approaching the equilibrium points in the simulation study is carried out using Mathematica 7.0. The simulation results show that the G-CSF treatment can successfully decrease the number of HSC, which means reducing the CML.
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