Judul: The Role of Leading Sectors in Supporting the  Economic Growth of East Java Province Before and During the Covid-19  Pandemic
Abstrak: Jawa Timur merupakan salah satu penggerak perekonomian Indonesia karena merupakan penyumbang PDRB terbesar kedua setelah DKI Jakarta. Namun, pada tahun 2020 perekonomian Jawa Timur menunjukkan kontraksi pertumbuhan hingga nilainya mencapai -2,33 persen. Hal tersebut tidak lepas dari adanya pandemi Covid-19 yang menyebabkan sebagian lapangan usaha juga menunjukkan pertumbuhan negatif. Dalam rangka mencapai tujuan dan sasaran pembangunan daerah terkhusus pertumbuhan ekonomi daerah secara optimal di Provinsi Jawa Timur, maka pembangunan daerah dapat disusun menurut tujuan antar sektor. Dengan menggunakan analisis deskriptif, pendekatan Location Quotient (LQ), pendekatan Shift Share, dan overlay melalui nilai PDRB Rill menurut lapangan usaha berdasarkan harga konstan 2010 didapatkan empat sektor unggulan diantaranya sektor industri pengolahan; perdagangan besar dan eceran, reparasi mobil dan sepeda motor; penyediaan akomodasi dan makan minum; informasi dan komunikasi. Keempat sektor unggulan tersebut memiliki peran penting dalam mendukung pertumbuhan ekonomi di Jawa Timur karena memiliki laju pertumbuhan yang cepat, kontribusi yang tinggi, dan pangsa pasar yang luas baik sebelum adanya pandemic maupun saat pandemi covid-19. Sehingga pemerintah perlu memprioritaskan sektor-sektor unggulan tersebut dalam mendukung pertumbuhan ekonomi di Provinsi Jawa Timur., East Java is one of the driving forces of Indonesia's economy as it is the second-largest contributor to the Gross Regional Domestic Product (PDRB) after DKI Jakarta. However, in 2020, the economy of East Java experienced a contraction with a growth rate reaching -2.33 percent. This was primarily due to the impact of the Covid-19 pandemic, which led to negative growth in several sectors. In order to achieve the objectives and targets of regional development, especially in terms of economic growth in East Java Province, regional development can be structured according to inter-sectoral goals. Through descriptive analysis, the Location Quotient (LQ) approach, the Shift Share approach, and overlay using the Real Gross Domestic Product (PDRB Rill) based on constant prices in 2010, four leading sectors were identified. These sectors are the manufacturing industry, wholesale and retail trade, motor vehicle and motorcycle repair, accommodation, and food services, as well as information and communication. These four leading sectors play a crucial role in supporting economic growth in East Java due to their rapid growth rate, high contribution, and broad market share, both before and during the Covid-19 pandemic.Hence, the government needs to prioritize these leading sectors to support economic growth in East Java Province.
Keyword: Covid-19, Economic Growth, Gross Domestic Regional Product, Overlay, Location Quotient, Shift Share

Judul: Dinamika Sektor Industri Manufaktur dalam Pembangunan  Perekonomian Wilayah Provinsi Jawa Timur
Abstrak: Provinsi Jawa Timur, adalah salah satu kawasan penting pertumbuhan industri dan perdagangan (bisnis) karena letaknya yang strategis yang menghubungkan kotakota pertumbuhan di wilayah Tengah dan Timur Indonesia, sekaligus jembatan penghubung dengan wilayah Barat Indonesia. Posisi yang strategis tersebut menjadikan sektor industri manufaktur sebagai sektor yang penting bagi Jawa Timur. Peranan sektor industri manufaktur dalam pembangunan memang tidak bisa dipungkiri mampu meningkatkan PDRB, menyerap tenaga kerja, serta keterkaitannya dengan sektor lain. Keterkaitan sektor industri dengan sektor lainnya merupakan salah satu isu regional dalam suatu perencanaan dan pembangunan wilayah. Guncangan perekonomian seperti krisis moneter maupun bencana yang terjadi di Indonesia serta berimbas ke Jawa Timur juga, menjadi ajang ujian alami sektor industri, industri yang memiliki daya saing kuat akan tetap eksis. Oleh karena itu adanya indikasi penurunan peranan sektor industri manufaktur ini harus diwaspadai.
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Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell