Designing globally consistent network schemas

Kuck, Sharon McCure; Sagiv, Yehoshua

doi:10.1145/971695.582223

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…Propeller-shaped π-electron systems that possess a paddlewheel configuration with threefold symmetry, as represented by triptycene [1,2] and π-annulated [3.3.3]propellanes, [3][4][5][6] provide a three dimensional π-scaffold. Their unique molecular configuration have found application in various functional areas, for instance, as molecular motors [7] and as ligands.…”

Section: Synthesis and Electronic Properties Of Triperyleno[333] Prmentioning

confidence: 99%

Synthesis and Electronic Properties of Triperyleno[3.3.3]Propellanes: Towards Two‐Dimensional Electronic Structures

2019

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Threefold symmetric triperyleno[3.3.3]propellanes (TPRPs), which are composed of three perylene units peri‐fused on [3.3.3]proppellane, have been synthesized and their electronic properties characterized. Unsubstituted TPRP assembles into two‐dimensional honeycomb‐like networks. TPRP displays a bathochromic‐shifted absorption band in its absorption spectrum and shows well‐separated one‐electron redox waves in a cyclic voltammogram, due to a homoconjugative interaction between perylene moieties. A radical cation species of tert‐butyl substituted TPRP shows spin delocalization over the whole of the molecule, which is derived from effective overlap of HOMOs among three perylene moieties.

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Section: Synthesis and Electronic Properties Of Triperyleno[333] Prmentioning

confidence: 99%

Synthesis and Electronic Properties of Triperyleno[3.3.3]Propellanes: Towards Two‐Dimensional Electronic Structures

2019

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Conditions of efficient updates on network structures

Konomi

Furukawa

Kambayashi

1992

Systems & Computers in Japan

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Redundant network structures allow efficient retrievals. Procedures to design network structures that allow efficient retrievals [9] add redundancies into network structures. However, as redundancies increase, costs of updates increase. When network structures are redundant, costs of updates include costs of updating original data, checking consistencies, and updating derived data. This paper presents the super-key condition to reduce the costs of checking consistencies in redundant network structures.First, constraints required to keep redundant network structures consistent are shown and then a sequence of processes to delete or insert a record in redundant network structures maintaining the constraints is given. Relationships between functional dependencies and updates are discussed to derive the super-key condition. The condition classifies network structures regarding costs of the processes to delete or insert a record. Finally, a procedure to design network structures that satisfy the super-key condition is given. The procedure may increase redundancies of network structures to reduce costs of updates.

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Međusobno pozdravljanje, obraćanje i oslovljavanje vaspitača i dece u predškolskim ustanovama

Kelemen-Milojević¹,

Petrović²

2021

Istraživanja u pedagogiji

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U ovom radu donose se rezultati istraživanja o međusobnom pozdravljanju, obraćanju i oslovljavanju vaspitača i dece u predškolskim ustanovama iz perspektive vaspitača sa ciljem da se ispita trenutno stanje i otkrije da li postoji potreba za postavljanjem standardnih okvira kada je reč o prihvatljivim formama pozdravljanja, obraćanja i oslovljavanja među vaspitačima i decom u kontekstu predškolske ustanove. Shodno cilju, sačinjen je anketni upitnik koji je popunilo 152 vaspitača koji rade sa jaslenim i predškolskim vaspitnim grupama. Prikupljeni rezultati istraživanja prikazani su pomoću deskriptivne i analitičke metode i propraćeni kratkim diskusijama, s obzirom na problematiku pokrenutu određenim pitanjima. Rezultati istraživanja pokazuju da među ispitanicima postoji velika razlika u mišljenjima i stavovima o međusobnom pozdravljanju, obraćanju i oslovljavanju vaspitača i dece, te da je u narednom periodu neophodno razmatrati ovu temu u okviru predškolskih ustanova i doneti konkretnija pravila ponašanja u kojima će biti postavljeni standardni okviri o prihvatljivim formama pozdravljanja, obraćanja i oslovljavanja među vaspitačima i decom, a imajući u vidu uzrast dece i vaspitne grupe.

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Designing globally consistent network schemas

Cited by 3 publications

References 14 publications

Synthesis and Electronic Properties of Triperyleno[3.3.3]Propellanes: Towards Two‐Dimensional Electronic Structures

Synthesis and Electronic Properties of Triperyleno[3.3.3]Propellanes: Towards Two‐Dimensional Electronic Structures

Conditions of efficient updates on network structures

Međusobno pozdravljanje, obraćanje i oslovljavanje vaspitača i dece u predškolskim ustanovama

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