In this research, the lifetime of green organic light emitting diodes (OLEDs) is studied using four passivation layers. To encapsulate the OLEDs, MgF2, YF3, composed of alternating MgF2/ZnS and YF3/ZnS layers were grown by thermal vacuum deposition. Measurements show that the device lifetime is significantly improved by using YF3 and ZnS as passivation layers. However, diodes encapsulated by Mg...

The team orienteering problem (TOP) is a particular vehicle routing problem in which the aim is to maximize the profit gained from visiting customers without exceeding a travel cost/time limit. This paper proposes a new and fast evaluation process for TOP based on an interval graph model and a Particle Swarm Optimization inspired algorithm (PSOiA) to solve the problem. Experiments conducted on ...

It is well-known that the top quark is the heaviest fermion in the Standard Model. An immediate consequence of that fact is its very short lifetime which turns out to be shorter than the characteristic timescale of nonperturbative QCD effects. Thanks to this feature, the top behaves almost like a free quark, which is really a unique situation in QCD. Moreover, the process t → bW is an absolutel...

The purpose of this paper is control of simply supported flexible core sandwich beam's linear vibration equipped with piezoelectric patches under different loads. The effects of external forces imposed on sandwich beam can be reached to a minimum value by designing an appropriate controller and control the beam's vibration. Three-layer sandwich beam theory is used for analytical modeling of san...

1. APPROXIMATE TOP-K Let {e1, e2, . . . , el} be a set of distinct records in a database, with unique IDs {id1, id2, . . . , idl}. Let A1, A2, . . . , Ap be a set of distinct attributes for each record. For every record ei, the attribute Aj is zero or some positive value. We denote the value of the attribute Aj of record ei by Aj(ei). The sum of the attributes of ei is denoted by Ni = ∑ j Aj(ei...

The fine-tuning principles are analyzed in search for predictions of top-quark and Higgs-boson masses. The modification of Veltman condition based on the compensation between fermion and boson vacuum energies within the Standard Model multiplets is proposed. It is supplied with the stability under rescaling and with the requirement of minimum for the physical v. e. v. for the Higgs field (zero ...

We consider a situation in which we see samples Xn ∈ R drawn i.i.d. from somedistribution with mean zero and unknown covariance A. We wish to compute thetop eigenvector of A in an incremental fashion with an algorithm that maintainsan estimate of the top eigenvector in O(d) space, and incrementally adjusts theestimate with each new data point that arrives. Two classical such...

This study is to determine the level of brand awareness visitors consisting top mind, recall, recognition and unaware at Pohsanten Tourist Village in Jembrana Regency, Bali, Indonesia. Data were collected by using a questionnaire distributed tourist village accidental compenience sampling 60 respondents. The data analyzed descriptively quantitatively with frequency. From results analysis it can...

Perceptual disturbances in zero-g and 1-g differ. For example, the vestibular coriolis (or "cross-coupled") effect is weaker in zero-g. In 1-g, blindfolded subjects rotating on-axis experience perceptual disturbances upon head tilt, but the effects diminish in zero-g. Head tilts during centrifugation in zero-g and 1-g are investigated here by means of three-dimensional modeling, using a model t...