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"This paper tries to answer a basic ( and often-asked) question about econophysics: " Whereas it is quite understandable that physical techniques of observation , ( e.g , infra -red spectoscopy ) can be useful in investing DNA or proteins, it is much less obvious why and how ideas from physics can be helpful in investigating socio-economics phonemena"... "

"Penelitian ini bertujuan untuk menganalisis faktor-faktor yang paling berpengaruh terhadap keputusan pembelian rumah oleh konsumen di wilayah Jabodetabek serta merumuskan strategi pemasaran bagi sebuah perusahaan properti di Jakarta Selatan agar dapat terus bersaing dan mempertahankan nilai penjualan. Data pada penelitian ini dikumpulkan menggunakan kuesioner untuk pengolahan data menggunakan metode partial least squares-structural equation modeling (PLS-SEM) dan dengan melakukan wawancara mendalam kepada pihak perusahaan untuk perumusan strategi pemasaran. Berdasarkan hasil penelitian ini, didapatkan faktor yang berpengaruh secara terhadap keputusan pembelian rumah, yaitu trust, environment, characteristics, attitude, dan legality, serta lima usulan alternatif strategi pemasaran yang dapat dilakukan, yaitu peningkatan nilai brand equity, perbaikan fasilitas proyek, skema promo baru, dan kerja sama dengan pihak eksternal.

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This study aims to analyze the most influential factors in the decision-making process of home purchases by consumers in the Jabodetabek area and formulate marketing strategies for a real estate company in South Jakarta to remain competitive and maintain sales value. Data for this research were collected using questionnaires for the data processed using the partial least squares-structural equation modeling (PLS-SEM) method, and in-depth interviews were conducted with company representatives to formulate a marketing strategy. Based on the findings of this study, the factors influencing house purchase decisions were identified as trust, environment, characteristics, attitude, and legality. Additionally, five alternative marketing strategy proposals were suggested, including enhancing brand equity, improving project facilities, introducing new promotional schemes, and collaborating with external parties."

"Kami melakukan perhitungan konduktivitas optis pada layered (perovskite) Pr0.5Ca1.5MnO4untuk mengidentifikasi fenomena charge-ordering. Pemodelan melibatkan orbital Mn dan O yang berada pada bidang MnO2 dari layered Pr0.5Ca1.5MnO4. Interaksi yang diperhitungkan dalam pemodelan yaitu interaksi Coulomb inter-orbital dan intra-orbital, distorsi Jahn-Teller dan exchange interaction dengan menerapkan beberapa asumsi. Perhitungan dilakukan menggunakan Dynamical Mean Field Theory untuk mencapai self-consistency. Hasil perhitungan menunjukkan profile yang mendekati hasil eksperimen dengan puncak charge-ordering berada di bawah 1 eV dan puncak charge-transfer pada 3-3.7 eV. Di bawah temperatur TCO=OO ( 325 K), puncak charge-ordering mengalami blue shift seiring dengan penurunan temperatur.

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We calculate the optical conductivity of layered (perovskite) Pr0.5Ca1.5MnO4 to capture charge-ordering phenomena. The calculations are based on a model which considers Mn and O orbitals within the MnO2 plane of layered Pr0.5Ca1.5MnO4. Interaction terms included in the model with some assumptions are the inter-orbital and intra-orbital Coulomb repulsions, the static Jahn-Teller distortion and the exchange interaction. We calculate within Dynamical Mean Field Theory to achieve self-consistency. The result shows a profile similar to recent experimental data, where the charge-ordering peak appears below 1 eV and charge-transfer peak at 3-3.7 eV. For temperaturelower than TCO=OO ( 325 K), the charge-ordering peak undergoes a blue shift as the temperature is decreased."

"This book collects recent developments in nonlinear and complex systems. It provides up-to-date theoretic developments and new techniques based on a nonlinear dynamical systems approach that can be used to model and understand complex behavior in nonlinear dynamical systems. It covers symmetry groups, conservation laws, risk reduction management, barriers in Hamiltonian systems, and synchronization and chaotic transient. Illustrating mathematical modeling applications to nonlinear physics and nonlinear engineering, the book is ideal for academic and industrial researchers concerned with machinery and controls, manufacturing, and controls.· Introduces new concepts for understanding and modeling complex systems;· Explains risk reduction management in complex systems;· Examines the symmetry group approach to understanding complex systems;· Illustrates the relation between transient chaos and crises."

"Kehadiran Fintech sebagai layanan keuangan yang inovatif dan distruptive dapat meningkatkan efisiensi melalui penerapan teknologi. Kehadiran Fintech di Indonesia dinilai memiliki beragam manfaat bagi perekonomian negara dan juga mampu membuka lapangan pekerjaan baru. Dukurngan pemerintah terhadap peran Fintech dalam meningkatkan inklusi keuangan nasional mendorong tumbuhnya Fintech di Indonesia. Namun, tingkat adopsi Fintech di Indonesia masih relatif rendah jika dibandingkan dengan negara-negara lain di Asia. Tujuan penelitian ini adalah untuk merancang rekomendasi strategi pengembangan layanan Fintech guna meningkatkan niat pengguna untuk mengadopsi layanan Fintech. Penelitian ini menggunakan model konseptual yang berbasis pendekatan risiko-manfaat yang diadaptasi berdasarkan theory of reasoned action, theory of planned behavior dan technology acceptance model. Berdasarkan data empiris yang dikumpulkan dari 100 orang responden yang menggunakan layanan Fintech. Metode Partial Least Square (PLS-SEM) digunakan untuk memperkirakan hubungan antara konstruk. Hasil SEM menunjukkan bahwa faktor trust, economic benefit dan convenience terbukti secara signifikan mempengaruhi pengguna untuk mengadopsi layanan Fintech, sementara faktor privacy awareness, financial risk dan legal risk terbukti secara signifikan memengaruhi trust pengguna. Berdasarkan hasil tersebut, 14 rekomendasi strategi diajukan dan dinilai oleh para ahli yang berkecimpung di dunia Fintech di Indonesia. Penilaian strategi dilakukan dengan integrasi metode IPA-Kano dimana strategi mengenai perlindungan konsumen terhadap ancaman keamanan dan kerugian finansial menempati priotitas tertinggi, diikuti dengan penawaran promo dan diskon pada urutan priotitas kedua dan penguatan aspek positif layanan melalui iklan dan promosi berada pada urutan ketiga.

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The presence of Fintech as an innovative and distruptive financial service can improve efficiency through the application of technology. The presence of Fintech in Indonesia is considered to have a variety of benefits for the country's economy and is also capable of reducing the unemployment rate. The government's support for Fintech's role in increasing national financial inclusion drives Fintech's growth in Indonesia. However, the adoption rate of Fintech in Indonesia is still relatively low when compared to other countries in Asia. The purpose of this study is to design strategies recommendations for Fintech service development to increase user intentions to adopt Fintech services. This study uses a conceptual model based on a risk-benefit approach that is adapted based on theory of reasoned action, theory of planned behavior and technology acceptance models. Based on empirical data collected from 100 respondents who used Fintech services. The Partial Least Square (PLS-SEM) method is used to estimate the relationship between constructs. SEM results show that trust, economic benefit and convenience are proven to significantly influence users to adopt Fintech services, while privacy awareness, financial risk and legal risk factors are proven to significantly affect user trust. Based on these results, 14 strategic recommendations were submitted and assessed by experts of Fintech in Indonesia. The strategy assessment is carried out by the integration of the IPA-Kano method where the strategy regarding consumer protection against security threats and financial losses occupies the highest priority, followed by promotion offers and discounts in the second priority sequence and strengthening positive aspects of services through advertising and promotions are ranked third."

"Dalam sistem moneter yang berbasis syariah, target-target kebijakan moneter yang berhasil adalah yang dipusatkan ke arah tercapainya stabilisasi ekonomi yang dapat diukur dengan salah satu indikator berupa kestabilan pergerakan agregat moneter yang hanya berfungsi sebagai alat transaksi, dan juga dalam kegunannya sebagai instrumen kebijakan moneter. Hal tersebut hanya dapat tercapai melalui konsistensi dengan aturan yang berlaku dalam ajaran Islam Penelitian ini adalah sebuah percobaan untuk menganalisis, mengevaluasi dan juga membuktikan keabsahan dari keefektifan dan kestabilan instrumen-instrumen moneter syariah. Hasil penelitian dengan melihat velositas agregat moneter dan terutama metode pendekatan kointegrasi dan error-correction mechanism, menunjukkan bahwa Otoritas Moneter dalam hubungannya dengan kebijakan pengaturan tingkat harga besar-besaran moneter yang telah mengandung bunga. Pada sisi lain jangka panjang, permintaan agregat moneter bebas bunga akan relatif lebih stabil sehingga gangguan yang bersifat jangka pendek akan tereduksi untuk kembalo ke keseimbangan jangka panjangnya."

"This study aims (1) to construct an Econometric Input-Output Model for Indonesia, that emphasizes the linkage between sectors, and (2) to analyze the impact of budget allocation on development expenditure to Indonesian's economy in 2002.

The model, constructed by combining the advantages of an input-output model and an econometric model, is called the Indonesian Econometric Input-Output Model or "Model Input-Output Ekonometrika Indonesia" (MIENA). MIENA consists of 112 dynamic simultaneous equations which utilize secondary data from 19SO-20UO. The equation parameters are estimated by using a combination of three estimation methods: (1) Ordinary Least Squares, (2) First Order of Autoregressive and (3) Second Order of Autoregressive. The model is validated by the Gauss-Siedel Method, it is then used for protections and policy impact analysis simulations on budget development expenditure and world economic conditions.

The study finds that the impact of budget reallocation for development expenditure (final demand, output, income, and sectoral employment) is better than the budget allocation for development expenditure in the National Budgetary Plan (RAP3N) for 2002. The plantation sector contributed the most to supporting output multiplier and high income. The food, beverages, and tobacco industries contributed the most to yield a high employment multiplier."