in this paper we investigate multi-objective integer linear programming (moilp) problems with unbounded feasible region and introduce recession direction for moilp problems. then we present necessary and sufficient conditions to have unbounded feasible region and infinite optimal values for objective functions of moilp problems. finally we present some examples with unbounded feasible region and fi...

In this paper we investigate Multi-Objective Integer Linear Programming (MOILP) problems with unbounded feasible region and introduce recession direction for MOILP problems. Then we present necessary and sufficient conditions to have unbounded feasible region and infinite optimal values for objective functions of MOILP problems. Finally we present some examples with unbounded feasible region and fi...

Gingival recession is displacement of the soft tissue margin apically leading to root surface exposure. Tooth malpositions, high muscle attachment, frenal pull have been associated with gingival tissue recession. Occlusal trauma is defined as injury resulting in tissue changes within the attachment apparatus as a result of occlusal forces. Trauma from occlusion may cause a shift in tooth positi...

background and aim . gingival recession as the apical migration of the gingival margin that results in exposure of the cementoenamel junction (cej) and the root surface. in this case series we aimed to demonstrate a combination technique using semilunar coronally positioned flap with free gingival graft for root coverage. materials and methods . a total of 12 healthy subjects, 25-45 years of ag...

ORAL & Implantology Anno I N. 3-4/2008 137 The gingival recession is clinically defined as the apical movement of the gingival margin to the cementoenamel junction (CEJ) (1). Histologically it is characterised by the loss of connective fibres of the periodontal tissue and alveolar bone (2). This clinical condition is frequently noticed in the population and particularly among patients with high...

AIMS To examine the postoperative stability of inferior rectus recession, with particular reference to the incidence of progressive overcorrection. METHODS The results of consecutive patients undergoing inferior rectus recession over a 3 year period were reviewed. RESULTS 21 patients underwent inferior rectus recession, using an adjustable suture technique in all but three cases. In 16 pati...

ALTHOUGH it has been recognized for a considerable time that operation on a strabismus co-existing with nystagmus may have a beneficial effect on the nystagmus, it does not appear to have been until 1953 that work was published relating to operation on cases of nystagmus with the direct intention of improving this condition. Then, from three different continents within a short time, separate re...

Several empirical studies have documented that the signs of excess stock returns are, to some extent, predictable. In this paper, we consider the predictive ability of the binary dependent dynamic probit model in predicting the direction of monthly excess stock returns. The recession forecast obtained from the model for a binary recession indicator appears to be the most useful predictive varia...

The shear-induced microstructure in a semidilute noncolloidal suspension is studied. A high-resolution pair distribution function in the plane of shear is experimentally determined. It is shown to be anisotropic, with a depleted direction close to the velocity axis in the recession quadrant. The influence of roughness on the interaction between particles is quantitatively evidenced. The experim...

FIG. I Superior and inferior rectus muscles are displaced temporally, the nasal tip of each muscle being attached at the temporal end of the original insertion and the temporal tip being attached at the upper or lower end of the lateral rectus. The direction of the vertical rectus muscles is thereby changed, so that they abduct instead ofadducting. The operation is completed with a recession of...