نتایج جستجو برای: اندیس nics

تعداد نتایج: 1904  

Journal: :Chemical communications 2012
Hideaki Miyake Takahiro Sasamori Judy I-Chia Wu Paul v R Schleyer Norihiro Tokitoh

Reduction of a 4,5,6-triphospha[3]radialene gave the corresponding isolable dianionic species. Despite having two deltate dianion-like π-electrons delocalized over the central framework, its small NICS(0)(πzz) value (only -2.2 ppm) indicates only limited aromaticity.

Journal: :IEEE Access 2021

RDMA has become one of the most prominent networking technologies in DCNs by providing high bandwidth and ultra-low latency, especially for data-intensive applications. An important challenge with is to exploit multi-path throughput reliability. Several studies have been proposed utilize networks, but they commonly require modification NICs, which makes it hard deploy them practice. In this pap...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز 1390

در قسمت اول، خاصیت آروماتیسیته در خوشه های فلزی (x2m2:(si,ge , y:al,ga با گروههای تقارنی d2h وc2v ، خوشه های (b2xy(x:n,p , y:o,s,se و al2mn(m:c,si,ge , n:s,se) از دیدگاه نظری توسط شاخص های جابه جایی شیمیایی غیر وابسته ی هسته (nics)و سرعت – nics مورد بررسی قرار گرفت. با استفاده از روش های *hf/6-311+g و *b3lyp/6-311+g، ساختار مولکول ها بهینه و سپسnics و سرعت – nics آن ها محاسبه شد. در بررسی آروما...

2000
Henry G. Dietz Timothy Mattox

KLAT2, Kentucky Linux Athlon Testbed 2, is a cluster of 64 (plus two ‘‘hot spare’’) 700MHz AMD Athlon PCs. The raw compute speed of the processors justifies calling the system a supercomputer, but these fast nodes must be mated with a high-performance network in order to achieve the balance needed to obtain speed-up on real applications. Usually, cluster networks are built by combining the fast...

Journal: :Dalton transactions 2010
Ashwini K Phukan Ankur Kanti Guha Bernard Silvi

A combined DFT, AIM and ELF study has been carried out on borazine and its heavier analogs containing both the pnictogens and chalcogens as the ring constituent. Compared to the pnictogen substituted rings, chalcogen substituted rings are found to be less aromatic. Except for a few systems, the computed aromatic stabilization energies (ASE) do not correlate with the NICS values. For these ring ...

Journal: :Chemistry 2007
Matthew D Wodrich Clémence Corminboeuf Sung Soo Park Paul von Ragué Schleyer

The double-aromatic character of selected monocyclic carbon, boron, and borocarbon rings is demonstrated by refined nucleus-independent chemical shift (NICS) analyses involving the contributions of individual canonical MOs and their out-of-plane NICS tensor component (CMO-NICS(zz)). The double aromaticity considered results from two mutually orthogonal Hückel p AO frameworks in a single molecul...

ژورنال: :caspian journal of mathematical sciences 0
a. azad arak university n. elahinezhad arak university

فرض کنیم g یک گروه ناآبلی باشد. گراف ناجابجایی $gamma_g$ از g تعریف می شود با مجموعه رئوس g و دو عضو از آن تشکیل یال می دهد اگر باهم جابجا نشوند. در این مقاله ما بعضی از خواص این گراف و ac -گروه n -منظم را معرفی می کنیم. سپس فرمولی برای اندیس سگد گراف ناجابجایی یک گروه متناهی بر حسب اندازه های n و z(g) و g بدست می آوریم. همچنین مشخص می کنیم مقدار اندیس همندی برای هر گروه متناهی برحسب k(g) و اند...

Journal: :Chemistry 2003
Jordi Poater Xavier Fradera Miquel Duran Miquel Solà

This work introduces a new local aromaticity measure, defined as the mean of Bader's electron delocalization index (DI) of para-related carbon atoms in six-membered rings. This new electronic criterion of aromaticity is based on the fact that aromaticity is related to the cyclic delocalized distribution of pi-electrons. We have found that this DI and the harmonic oscillator model of aromaticity...

2008
Vladimir Brik Suman Banerjee Marco Gruteser Sangho Oh

This paper describes a technique that identifies an ieee 802.11 frame’s source network interface card through passive radio-frequency analysis. Our approach, called paradis, leverages minute imperfections of transmitter hardware that are acquired at manufacture and are present even in otherwise identical nics. These imperfections are transmitterspecific and manifest themselves as artifacts of t...

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