Modelling temporal and spatial features of collaboration network

The collaboration network is an example of a social network which has both non-trivial temporal and spatial dependence. Based on the observations of collaborations in Physical Review Letters, a model of collaboration network is proposed which correctly reproduces the time evolution of the link length distributions, clustering coefficients, degree distributions and assortative property of real data to a large extent.Comment: 8 pages, 10 figures; follow up work on arXiv.org/physics/0511181; accepted for publication in IJMP

Solvent-free, catalyst-free Michael-type addition of amines to electron-deficient alkenes

A variety of amines undergo Michael-type additions to α,β-unsaturated nitriles, carboxylic ester and ketones in a neat mixture without any solvent and catalyst to produce the corresponding β-amino derivatives in excellent yields

Highly efficient acylation of alcohols, amines and thiols under solvent-free and catalyst-free conditions

A general, simple, efficient, cost-effective and green procedure for acylation of alcohols, amines and thiols has been developed by treatment with acid anhydride or acid chloride at 80-85°C under solvent and catalyst-free conditions

Perancangan dan Implementasi Aplikasi Distribusi Bantuan UMKM Kabupaten Sigi

Penelitian ini membahas tentang permasalahan dalam proses verifikasi kelayakan distribusi bantuan UMKM dari Dinas Koperasi dan UMKM Kabupaten Sigi, yang disebabkan oleh kesalahan pada saat proses pendataan dan adanya unsur subyektifitas dalam penentuan penerima dana. Selain itu masalah yang terjadi adalah pemberian bantuan yang berulang-ulang dan ada yang mendapatkan bantuan belum selesai masa pemberian bantuan selanjutnya. Hal ini akan mengakibatkan terjadinya ketidak akuratan dalam penyaluran dana bantuan ke UMKM. Tujuan penelitian ini adalah untuk merancang dan meinplemenasikan aplikasi distribuis bantuan UMKM oleh Dinas. Metod Perancangan yang digunakan dalam penelitian ini adalah Prototype. Hasil penelitian ini menemukan bahwa aplikasi dapat memberikan informasi mengenai daftar penerima bantuan UMKM di Kabupaten Sigi, dapat melakukan verifikasi penerima UMKM yang sudah pernah menerima bantuan di tahun yang sama. Berdasarkan hasil pengujian yang telah dilakukan dapat disimpulkan bahwa aplikasi secara fungsional mengeluarkan hasil sesuai dengan yang diharapkan dan dinyatakan vali

Metal-Free C-5 Hydroxylation of 8-Aminoquinoline Amide

Diacetoxyiodobenzene-mediated remote hydroxylation of 8-aminoquinoline amide at the C-5 position has been developed. Various aryl, heteroaryl, and aliphatic carboxamides work well to afford the hydroxylated derivatives in good yields. This protocol is scalable and exhibits high functional group tolerance. Experimental results suggest that the reaction likely proceeds through the single-electron-transfer pathway

Coevolution of Glauber-like Ising dynamics on typical networks

We consider coevolution of site status and link structures from two different initial networks: a one dimensional Ising chain and a scale free network. The dynamics is governed by a preassigned stability parameter $S$, and a rewiring factor $\phi$, that determines whether the Ising spin at the chosen site flips or whether the node gets rewired to another node in the system. This dynamics has also been studied with Ising spins distributed randomly among nodes which lie on a network with preferential attachment. We have observed the steady state average stability and magnetisation for both kinds of systems to have an idea about the effect of initial network topology. Although the average stability shows almost similar behaviour, the magnetisation depends on the initial condition we start from. Apart from the local dynamics, the global effect on the dynamics has also been studied. These parameters show interesting variations for different values of $S$ and $\phi$, which helps in determining the steady-state condition for a given substrate.Comment: 8 pages, 10 figure

Applicability of four parameter formalisms in interpreting thermodynamic properties of binary systems

The four parameter functions are generally considered to be adequate for representation of the thermodynamic properties for the strongly interacting binary systems. The present study involves a critical comparison in terms of applicability of the three well known four-parameter formalisms for the representation of the thermodynamic properties of binary systems. The study indicates that the derived values of the infinite dilution parameters based on the formalisms compare favourably with the computed data available in the literature. The standard deviations in terms of the partial and integral excess functions of all the models lie well within the experimental scatter of the computed data and coincide exactly with each other. The formalisms are useful in representation of the thermodynamic properties of most of the binary systems except for the Mg-Bi and Mg-In systems. In such systems, it appears that the additional compositional terms may be necessary for the formalisms for adequate description of behaviour of the systems. Since the derived values of the thermodynamic properties of all the formalisms match favourably over the entire compositional range for the systems as studied in the present research, any one of them may be used for adequate representation of the properties of the systems