Judul: Analysis of Consumer Attitudes and Performance Attributes of Berkah Chicken Organic Chicken in the Jabodetabek Region
Abstrak: Masyarakat semakin sadar bahwa penggunaan bahan kimia anorganik berdampak negatif bagi kesehatan manusia dan juga lingkungan. Kesadaran masyarakat meningkat, gaya hidup sehat meningkat, dan tren makanan organik umumnya mendapat respon positif mulai dari sayuran, buah-buahan, produk susu, hingga daging ayam organik. Kesadaran masyarakat akan dampak negatif mengonsumsi daging ayam non organik mendorong mereka untuk beralih ke ayam organik. Tujuan dari penelitian ini adalah untuk menganalisis sikap konsumen, proses keputusan pembelian, kepuasan konsumen dan kinerja atribut ayam organik dari Berkah Chicken. Penelitian ini dilakukan di wilayah Jabodetabek pada Bulan Januari-Februari 2023. Metode yang digunakan dalam penelitian ini adalah metode survei dimana kuesioner dibagikan secara online kepada konsumen Berkah Chicken. Dalam penelitian ini sampel ditentukan dengan metode nonprobability sampling dengan teknik purposive sampling sebanyak 223 orang sampel. Sumber data yang digunakan adalah data primer dan data sekunder. Penelitian ini menggunakan metode analisis deskriptif, multiatribut fishbein, customer satisfaction index (CSI) dan importance performance analysis (IPA). Hasil penelitian menunjukkan sikap konsumen terhadap atribut ayam organik Berkah Chicken berada pada kategori sangat positif dengan nilai sikap 247,79. Nilai Tingkat kepuasan konsumen sebesar 88,94%, menunjukkan bahwa sebagian besar konsumen merasa sangat puas dengan produk ayam organik Berkah Chicken. Atribut ayam organik Berkah Chicken yang perlu diperbaiki kinerjanya dan menjadi prioritas utama dalam perbaikan adalah atribut daya tahan produk dan harga., Public awareness is increasing regarding the effect of inorganic chemical which affect negatively on human health and the environment. With this heightened awareness, there is an increase in healthy lifestyles and a positive response to organic food trends, ranging from vegetables, fruits, dairy product, to organic chicken meat. The awareness of the negative effects of consuming non organic chicken meat is driving consumers to switch to organic chicken. The aim of this research is to analyze consumer attitudes, purchasing decision-making processes, customer satisfaction, and the performance of attributes of organic chicken from Berkah Chicken. This research was conducted in the Jabodetabek area during January-February 2023. This research used survey method where the questionaries were distributed online to Berkah Chicken consumers. The sample was determined using non-probability sampling with purposive sampling techniques, and a total of 223 people were sampled. Primary and secondary data sources were used in this study. This research used descriptive analysis, multiattribute fishbein, customer satisfaction index (CSI), and importance performance analysis (IPA) methods. The results showed that consumers' attitudes towards the organic chicken attributes of Berkah Chicken were in the very positive category, with an attitude score of 247,79. The level of customer satisfaction was 88,94%, indicating that most consumers are very satisfied with Berkah Chicken's organic chicken products. The organic chicken attributes of Berkah Chicken that need improvement in performance and are a top priority for improvement are product durability and price.
Keyword: consumer attitudes, customer satisfaction index (CSI), fishbein multiattributes, importance performance analysis (IPA), organic chicken

Judul: Analisis Preferensi Konsumen dan Tingkat Kepuasan Terhadap Atribut Sayuran Organik
Abstrak: Sayuran organik merupakan sayuran yang dihasilkan dari proses bercocok tanam secara alami yang mengandalkan unsur-unsur alam sehingga produk yang dihasilkan tidak mengandung bahan kimia berbahaya. Sampai sejauh ini, umumnya sayuran organik lebih mudah ditemukan di kota-kota besar di Indonesia dan dipasarkan di pasar modern atau pasar swalayan tertentu. Hal tersebut disebabkan karena harga yang ditawarkan oleh produsen kepada konsumen untuk bisa mendapatkan sayuran organik relatif lebih mahal dari pada sayuran anorganik. Penelitian ini bertujuan untuk menganalisis karakteristik konsumen sayuran organik, preferensi konsumen sayuran organik, tingkat kepuasan konsumen terhadap atribut sayuran organik dan ketertarikan antara ketiganya. Metode pengumpulan data yang digunakan berupa teknik purposive sampling melalui penyebaran kuesioner kepada 140 responden. Sedangkan, metode pengolahan data yang digunakan dalam penelitian ini yaitu analisis deskriptif, analisis konjoin, Importance Performance Analysis (IPA), Customer Satisfaction Index (CSI) dan Chi Square. Hasil perhitungan preferensi konsumen dalam penelitian ini menunjukkan bahwa, kemasan merupakan indikator yang memiliki tingkat kepentingan tertinggi sebesar 28,99 persen. Berdasarkan hasil IPA, terdapat dua atribut yang memiliki prioritas utama untuk diperbaiki kinerjanya oleh Top Buah Segar Cibubur yaitu harga sayuran organik terjangkau dan potongan harga sayuran organik. Kemudian berdasarkan hasil perhitungan CSI didapatkan nilai sebesar 76,67 persen, dimana dari hasil perhitungan tersebut konsumen dinyatakan puas terhadap kinerja Top Buah Segar Cibubur. Uji Chi Square menunjukkan bahwa pada hasil karakteristik konsumen dengan preferensi konsumen didapatkan bahwa indikator jenis kelamin, usia, pekerjaan dan penerimaan memiliki keterkaitan dengan indikator harga pada preferensi, kemudian indikator pekerjaan memiliki keterkaitan dengan indikator label. Pada hasil karakteristik konsumen dengan kepuasan konsumen didapatkan bahwa status pernikahan memiliki keterkaitan dengan harga pada kepuasan, kemudian untuk pekerjaan memiliki keterkaitan dengan tempat. Pada hasil preferensi konsumen yang meliputi jenis sayuran, harga pada preferensi, kemasan dan label tidak memiliki keterkaitan dengan tingkat kepuasan konsumen yang meliputi produk, harga pada kepuasan, tempat dan promosi., Organic vegetables are vegetables produced by natural farming which depend on the elements so that products produced are devoid of chemical elements. Thus far, organic vegetables are easier to locate in major cities in Indonesia and mainly marketed in modern markets or supermarkets. It is caused by the price offered by producer to consumer to be able to get organik vegetables is relatively higher than inorganik vegetables. The study aims to analyze the characteristics of the consumer of organic vegetables, the consumer preferences for organic vegetables, the level of consumer satisfaction towards organic vegetables, and the correlation between those three variables. The data have been collected using purposive sampling technique through distribution of questionnaire to 140 respondents. Meanwhile, the data processing methods used in this research include descriptive analysis, conjoint analysis, Importance Performance Analysis (IPA), Customer Satisfaction Index (CSI), and chi square. Consumer preference calculations in this study indicate that packaging is an indicator with the highest levels of interest at 28,99 percent. According to IPA results, there are two attributes that have the highest priority for performance improvement by Top Buah Segar Cibubur which is the price of affordable organik vegetables and discounts on organic vegetables. According to CSI, the calculation results is 76,67 percent, which means the consumer was content with the performance
Keyword: importance performance analysis (ipa), customer satisfaction index (csi), customer's preference, customer satisfaction

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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