A5100694010- Advanced Wireless Communication Techniques
- Wireless Communication Networks Research
- Satellite Communication Systems
- Error Correcting Code Techniques
- Coding theory and cryptography
- Advanced MIMO Systems Optimization
- PAPR reduction in OFDM
- Cooperative Communication and Network Coding
- Building Energy and Comfort Optimization
- Education and Learning Interventions
- Scheduling and Optimization Algorithms
- Supramolecular Chemistry and Complexes
- Manufacturing Process and Optimization
- Advanced Wireless Network Optimization
- Telecommunications and Broadcasting Technologies
- Urban Heat Island Mitigation
- Wireless Communication Security Techniques
- Educational Systems and Policies
- Advanced Wireless Communication Technologies
- Molecular Sensors and Ion Detection
- Advanced Manufacturing and Logistics Optimization
- Advanced Multi-Objective Optimization Algorithms
- Antenna Design and Optimization
- Educational Research and Pedagogy
- Engineering Applied Research
Jeonbuk National University
2014-2024
Yonsei University
2011-2024
Yangzhou University
2018-2023
Convergence
2023
Samsung (South Korea)
2003-2022
Pohang University of Science and Technology
2003-2020
Seoul National University
2010-2017
Pusan National University
1996-2016
Sungkyunkwan University
2006-2016
Electronics and Telecommunications Research Institute
1999-2015
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTNew Cucurbituril Homologues: Syntheses, Isolation, Characterization, and X-ray Crystal Structures of Cucurbit[n]uril (n = 5, 7, 8)Jaheon Kim, In-Sun Jung, Soo-Young Eunsung Lee, Jin-Koo Kang, Shigeru Sakamoto, Kentaro Yamaguchi, Kimoon KimView Author Information National Creative Research Initiative Center for Smart Supramolecules Department Chemistry Pohang University Science Technology San 31 Hyojadong, 790-784, Republic Korea Chemical...
A long-standing problem in cucurbituril chemistry is answered through the first direct functionalization of cucurbit[n]uril (CB[n]; n = 5-8)) leading to perhydroxyCB[n] which can be further modified provide tailored CB[n] derivatives with desired functional groups and good solubility. Anchoring a CB[6] derivative on surface its potential application as sensor are demonstrated. forms nanospheres possible use protein peptide drug delivery.
In recent years, artificial intelligence (AI) technology has proliferated rapidly and widely into application areas such as speech recognition, health care, autonomous driving. To increase the capabilities of AI more powerful systems are needed to process a larger amount data. This requirement made domain-specific accelerators, GPUs TPUs, popular; they can provide orders magnitude higher performance than state-of-the-art CPUs. However, these accelerators only operate at their peak when get...
Oxaliplatin forms a stable 1 : inclusion complex with cucurbit[7]uril as indicated by NMR, mass spectrometry, isothermal titration calorimetry and X-ray crystallography. The encapsulation of the drug results in large enhancement stability, moderate decrease reactivity toward guanosine but much larger L-methionine, which suggests not only increases stability also may reduce unwanted side effects caused protein binding platinum drug. A preliminary vitro assay using various tumor cell lines...
Reminiscent of the ringed planet Saturn, new cucurbit[n]uril (CB[n]) derivatives CB*[5] and CB*[6] have rings decorating "equator". The in this case are five- six-fused cyclohexane rings, respectively (the structure is shown). remarkable solubility CB[n] water organic solvents allows not only their unusual binding properties toward metal ions neutral but also applications ion-selective electrodes to be studied. Supporting information for article available on WWW under...
Under lock and key: A molecular machine based on the redox-coupled guest exchange of a cucurbit[8]uril-stabilized charge-transfer complex is reported. It behaves as loop that requires not only key but also an activation process to open (see graphic).
This paper reports an efficient strategy to synthesize molecular necklaces, in which a number of small rings are threaded onto large ring, utilizing the principles self-assembly and coordination chemistry. Our involves (1) threading "bead" with short "string" make pseudorotaxane then (2) linking pseudorotaxanes metal complex two cis labile ligands acting as "angle connector" form cyclic product (molecular necklace). A 4- or 3-pyridylmethyl group is attached each end 1,4-diaminobutane...
Reminiscent of Russian Matrioshka dolls, tetraazamacrocycles (1,4,7,10-tetraazacyclododecane (cyclen) and 1 , 4 8 11 - tetraazacyclotetradecane (cyclam)) their transition metal complexes are encapsulated in the cavity cucurbit[8]uril (CB[8]). The X-ray crystal structure [Cu(cyclen)] CB[8] complex (see picture; copper: green, oxygen: red, nitrogen: blue, carbon: gray) reveals a five-coordinate CuII center square-pyramidal environment with water molecule bound to axial position.
A honeycomb structure is shown by the one-dimensional coordination polymer comprising D6h -symmetric cucurbituril molecules and rubidium ions (see picture). The stack atop one another show of their carbonyl groups to in between. shape symmetry building blocks encourage chains be arranged such a way as produce an open-framework with large, linear, hexagonal channels.
Two-station [2]rotaxanes in the shape of a degenerate naphthalene (NP) shuttle and nondegenerate monopyrrolotetrathiafulvalene (MPTTF)/NP redox-controllable switch have been synthesized characterized solution. Their dumbbell-shaped components are composed polyether chains interrupted along their lengths by (i) two π-electron-rich stationstwo NP moieties or MPTTF unit moietywith (ii) rigid arylethynyl butadiynyl spacer situated between stations terminated (iii) flexibly tethered hydrophobic...
In this letter, we propose a new secrecy enhancement scheme for spatial modulation systems by exploiting the knowledge of legitimate channel state information to rotate indices transmit antennas and constellation symbols, which are mapped into bits. A rate analysis shows that eavesdropper cannot recover any carried The numerical results on bit error verify effectiveness robustness proposed scheme.
Rapidly evolving artificial intelligence (Al) technology, such as deep learning, has been successfully deployed in various applications: image recognition, health care, and autonomous driving. Such rapid evolution successful deployment of Al technology have possible owing to the emergence accelerators, GPUs TPUs, that a higher data throughput. This, turn, requires an enhanced memory system with large capacity high bandwidth [1]; HBM most preferred high-bandwidth due its high-speed low-power...
With the rate of worldwide LNG demand expected to grow faster than that gas demand, most major oil companies are currently investing their resources develop floating LNG-FLNG (i.e. FSRU and FPSO). The global Floating (FLNG) market trend will be reviewed based on supply chain relationships. Typical technical issues associated with FLNG design categorized in terms performance evaluation. Although many proven technologies developed through carrier FPSO projects available for design, we still...
Efficient frequency reusing schemes with multibeam satellite systems can be considered as a promising means of providing high-quality services expensive and limited bandwidth resources. This letter considers integrated terrestrial systems, where the same bands are reused in beams cells. In such condition, we propose an efficient power resource allocation scheme to minimize inter-component interference while maximum throughput is provided users. The proposed consists two simple linear machine...
Hinter Schloss und Riegel: Eine molekulare Maschine, die auf dem redoxgekoppelten Gastaustausch eines Cucurbit[8]uril-stabilisierten Charge-Transfer-Komplexes basiert, wird vorgestellt. Sie verhält sich wie ein molekulares Kettenschloss, für dessen Öffnen nicht nur Schlüssel, sondern auch Aktivierungsschritt benötigt (siehe Bild). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2001/2005/z461806_s.pdf or from author. Please note: The...
The supramolecular assembly of tin(IV) porphyrin equipped with six pyridyl groups, trans-diisonicotinate[meso-tetrakis(4-pyridyl)porphyrinato]tin(IV), generates a uniform channel lined the in which lattice water molecules are ordered into single-file chain by hydrogen bonding between neighboring along as well and lining channel.
Abstract Future mobile networks are expected to involve systems that based on different technologies, such as WiFi, WiMAX, 2G/3G/3G+, LTE, and satellite. To address this scenario, ITU has defined integrated hybrid in the framework of Next‐Generation Networks. The interest is exploit cooperation wireless communication (segments) provide service users most efficient way, taking into account signal quality (coverage), traffic congestion conditions, cost issues. Integrated have potential be an...