Judul: Estimation of Damage and Loss Value of Swamp Flowers in Ranca Upas Tourism Area, Bandung Regency, West Java
Abstrak: Pada bulan Maret 2023, terjadi fenomena kerusakan bunga rawa di Ranca Upas yang disebabkan oleh aktivitas ratusan pengendara motor trail yang menimbulkan dampak negatif terhadap lingkungan. Oleh karena itu, perlu dilakukan penelitian untuk (1) Menganalisis persepsi dan pengetahuan wisatawan mengenai bunga rawa di Ranca Upas, (2) Menganalisis perubahan tingkat kunjungan di Ranca Upas antara sebelum dengan sesudah terjadinya kerusakan, serta (3) Mengestimasi nilai kerusakan dan kerugian bunga rawa di Ranca Upas. Metode analisis yang digunakan adalah analisis deskriptif, skala likert, loss of earnings, dan benefit transfer. Hasil penelitian menunjukkan (1) Mayoritas wisatawan yang berkunjung ke Ranca Upas mengetahui keberadaan dan kejadian kerusakan. Persepsi wisatawan adalah sangat setuju bahwa bunga rawa di Ranca Upas penting untuk dilindungi dan dilestarikan, penting terhadap minat berwisata, penting bagi daya tarik wisata, dan kondisinya sebaik sebelum terjadi insiden, (2) Kejadian kerusakan bunga rawa di Ranca Upas menyebabkan penurunan jumlah kunjungan wisatawan hanya selama 2 bulan masa pemulihan pasca kejadian kerusakan, (3) Nilai kerugian dan kerusakan bunga rawa yaitu sebesar Rp353.133.066,00., In March 2023, there was a phenomenon of swamp flower damage in Ranca Upas caused by the activities of hundreds of dirt bike riders that causes negative impacts on the environment. Therefore, necessary to (1) Analyze tourism perceptions and knowledge about swamp flowers in Ranca Upas, (2) Analyze changes level of visitation in Ranca Upas between before and after the damage, and (3) Estimate the value of damage and loss of swamp flowers in Ranca Upas. The analysis methods used descriptive analysis, likert scale, loss of earnings, and benefit transfer. The results showed (1) The majority of tourists visiting Ranca Upas knew the existence and occurrence of damage. Tourist perceptions are strongly agree that swamp flowers in Ranca Upas are important to protect and preserve, important for tourism interest, important for tourist attraction, and the condition is as good as before the incident occurred (2) The incident of swamp flower damage in Ranca Upas caused a decrease in the number of tourist visits only during the 2 month recovery period after the damage incident, (3) The value of losses and damage to flowers amounted to Rp353.133.066,00.
Keyword: analisis deskriptif, benefit transfer, Skala likert, analisis persepsi

Judul: Analysis of Economic Valuation and the Impact of COVID-19 Pandemic Towards the Visits Level of Ir. H. Djuanda Bandung Grand Forest Park
Abstrak: Perubahan iklim yang dipicu oleh pemanasan global merupakan permasalahan lingkungan yang menjadi perhatian penting dunia. Penyumbang gas karbon dioksida penyebab pemanasan global salah satunya merupakan wilayah perkotaan. Kota Bandung sebagai kota yang memiliki daya tarik kunjungan wisata lokal dan mancanegara yang tinggi berimplikasi pada menurunnya kualitas lingkungan. Salah satu upaya untuk mengatasi hal ini adalah membangun dan merevitalisasi RTH yaitu Taman Hutan Raya Ir. H Djuanda Bandung. Tingginya ancaman yang ada dan potensi pemanfaatan Tahura Bandung sebagai area ekowisata perlu dijaga dan dilestarikan oleh masyarakat maupun pemerintah. Penelitian ini bertujuan untuk 1) menganalisis persepsi pengunjung terhadap keberadaan Taman Hutan Raya Ir. H. Djuanda Bandung; 2) menganalisis persepsi pengunjung terhadap COVID-19; 3) menganalisis pengaruh pandemi COVID-19 terhadap tingkat kunjungan Taman Hutan Raya Ir. H. Djuanda Bandung; dan 4) mengestimasi besarnya nilai guna tidak langsung dan nilai keberadaan Taman Hutan Raya Ir. H. Djuanda Bandung. Metode yang digunakan adalah skala Likert, Pendekatan harga pasar, Benefit Transfer, dan Contigent Valuation Method. Selama pandemi COVID-19 pengunjung memberikan penilaian yang baik terhadap kawasan Taman Hutan Raya Ir. H. Djuanda Bandung. Pengunjung sepakat bahwa COVID-19 adalah virus berbahaya. Pandemi COVID-19 terbukti menyebabkan peningkatan tingkat kunjungan dikarenakan perubahan persepsi berwisata masyarakat. Total nilai ekonomi tidak langsung di Taman Hutan Raya Ir. H. Djuanda Bandung adalah sebesar Rp 28.232.524.275., Climate change triggered by global warming is an environmental problem that has become an important concern for the world. One of the contributors to carbon dioxide gas that causes global warming in urban areas. Bandung as a city that has attracted local and foreign tourist visits has implications on degrading the environmental quality. One of the efforts to overcome this is to build and revitalize green open space, namely Ir. H Djuanda Bandung Grand Forest Park. The high threat that exists and the potential use of Ir. H. Djuanda Bandung Grand Forest Park as an ecotourism area needs to be maintained and preserved by the community and the government. This study aims to 1) analyze visitor perceptions of the existence of Ir. H. Djuanda Bandung Grand Forest Park; 2) analyze visitors' perceptions of COVID-19; 3) analyze the effect of the COVID-19 pandemic on the level of visits to the Ir. H. Djuanda Bandung Grand Forest Park; and 4) estimate the magnitude of the indirect use value and existence value of Ir. H. Djuanda Bandung Grand Forest Park. The methods used are the Likert scale, market price approach, Benefit Transfer, and Contingent Valuation Method. During the COVID-19 pandemic, visitors gave a good assessment of the Ir. H. Djuanda Bandung Grand Forest Park. Visitors agree that COVID-19 is a dangerous virus. The COVID-19 pandemic has proven to have caused an increase in visit rates due to changes in people's perceptions of tourism. The total indirect economic value in Ir. H. Djuanda Bandung Grand Forest Park is Rp. 28,232,524,275.
Keyword: contingent valuation method, visitor perception, Likert scale

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4