Judul: Pengaruh Electronic Word of Mouth (eWOM) dan Emosi terhadap Perilaku Knowledge Sharing Isu Food Waste dengan Model AISAS
Abstrak: Perilaku knowledge sharing merupakan kegiatan berbagi informasi atau pengalaman yang menjadi tahapan terakhir pada model AISAS. Model AISAS merupakan model pengembangan perilaku konsumen yang terdiri atas 5 tahap yaitu Attention, Interest, Search, Action, dan Share. Penelitian ini secara umum bertujuan untuk menganalisis pengaruh electronic word of mouth (eWOM) dan emosi terhadap perilaku knowledge sharing isu food waste. Penelitian ini menggunakan data primer sebagai sumber data acuan utama. Desain penelitian yang digunakan adalah cross sectional study dengan metode self-administered menggunakan kuesioner online. Pengambilan data dilakukan pada bulan April 2020 selama dua minggu. Pemilihan lokasi dilakukan secara acak di dua universitas di Indonesia yang memiliki unit kegiatan mahasiswa di bidang food waste. Pengambilan contoh menggunakan voluntary sampling dengan kriteria mahasiswa anggota komunitas bidang food waste dan non-food waste dengan total sebanyak 302 orang. Analisis data menggunakan SPSS 25.0 dan LISREL 8.80. Hasil penelitian ini menunjukkan bahwa terdapat perbedaan yang signifikan pada attention, interest, search, action, share, eWOM, dan emosi antara komunitas bidang food waste dan bidang non-food waste. Antar variabel dalam tahapan AISAS memiliki pengaruh yang signifikan, kemudian variabel eWOM juga berpengaruh signifikan terhadap setiap variabel dalam tahapan AISAS. Emosi memiliki pengaruh yang signifikan terhadap action. Namun, penelitian ini menemukan bahwa emosi tidak memiliki pengaruh signifikan terhadap perilaku knowledge sharing.
Keyword: AISAS, emosi, eWOM, food waste, knowledge sharing

Judul: Pengaruh Kolektivisme dan Perceived Consumer Effectiveness Terhadap Perilaku Food waste dengan Teori Reasoned Action Approach
Abstrak: Teori reasoned action approach (RAA) merupakan model pengembangan dari teori planned behavior (TPB) yang telah terbukti dapat memprediksi intensi dan perilaku dengan baik. Perilaku food waste merujuk pada limbah makanan yang terbuang pada tahap konsumsi rumah tangga. Penelitian ini bertujuan untuk mengidentifikasi dan menganalisis pengaruh pengetahuan green consumer, kolektivisme dan perceived consumer effectiveness terhadap intensi mengurangi perilaku food waste dengan model RAA. Penelitian ini menggunakan desain cross sectional study dengan metode self-administered kuesioner daring. Contoh dalam penelitian adalah anggota keluarga yang mengelola kebutuhan pangan rumah tangga yang didapatkan secara voluntary sampling sebanyak 216 orang. Data penelitian dianalisis menggunakan metode SEM dengan software Linear Structural Relationship (LISREL) 8.80. Hasil penelitian ini menunjukkan bahwa variabel pengetahuan green consumer, kolektivisme dan perceived consumer effectiveness berpengaruh nyata terhadap variabel sikap pada perilaku food waste. Terdapat pula pengaruh signifikan pada variabel sikap dan perceived norms, namun tidak ditemukan pengaruh variabel perceived behavioral control terhadap variabel intensi. Pada penelitian ini intensi mengurangi food waste tidak memiliki pengaruh terhadap perilaku food waste. Kata kunci: Food waste, intensi, kolektivisme, perceived consumer effectiveness, RAA., This study predicts food waste behavior at the household level using the Reasoned Action Approach (RAA) theory, that was a development model of planned behavior theory (TPB) which has been proven to predict consumer behavior. Food waste behavior is defined as the behavior of dumping food waste at the household consumption stage. This study aims to identify and analyze knowledge, collectivism, and perceived consumer effectiveness of food waste behavior using the RAA theory. This research using cross sectional study. Samples in this study are 216 family members who are responsible for managing household food needs, which are obtained by voluntary sampling using the self-administered method, which is distributed through the social media such as WhatsApp and Instagram. Data analysis was performed using SEM method using Linear Structural Relationship (LISREL) 8.80 software. The results of this study indicate that the knowledge, collectivism, and perceived consumer effectiveness variable has a positive effect on the knowledge variable. The variables in the RAA model, attitude and perceived norms, were found to have a positive effect on the intention variable, while the variable perceived behavioral control was found to have no effect on the intention variable. In addition, the variables of intention, motivation, and habits were found to have a negative effect on the variable food waste behavior.
Keyword: Collectivism, food waste, intention, perceived consumer effectiveness, RAA

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