### CONTENTS
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Asymptotic property for nonlinear perturbed functional differential systems
Dong Man Im and Yoon Hoe Goo |
1 |

Double $(r,s)(u,v)$-preopen sets
Eun Pyo Lee and Seung On Lee |
13 |

Characterizations of flows near closed sets
Ki Shik Koo |
23 |

On solution set for convex optimization problem with convex integrable objective function and geometric constraint set
Gue Myung Lee and Jae Hyoung Lee |
29 |

On generalized derivations of $BCH$-algebras
Kyung Ho Kim |
37 |

Almost periodicity in differential equations
Sung Kyu Choi, Youn Hee Kim, and Namjip Koo |
49 |

A weighted global generalized cross validation for Gl-CGLS regularization
Seiyoung Chung, SunJoo Kwon, and SeYoung Oh |
59 |

Some umbral characteristics of the actuarial polynomials
Eun Woo Kim and Yu Seon Jang |
73 |

Generalized quadratic functional equation with several variables and its Hyers-Ulam stability
Hark-Mahn Kim and Hong Mei Liang |
83 |

An approximation for the queue length distribution in a
multi-server retrial queue
Jeongsim Kim |
95 |

Stability of an additive functional inequality in Banach spaces
Sang-Cho Chung |
103 |

On Henstock-Stieltjes integrals of interval-valued functions on time scales
Ju Han Yoon |
109 |

On the ratio of relative congruence zeta functions of cyclotomic function fields
Jaehyun Ahn |
117 |

The transforms of Pythagorean and quadratic means of weighted shifts
Sang Hoon Lee |
123 |

Completions of Hankel partial contractions of size $%
5\times 5$ non-extremal case
Sang Hoon Lee |
137 |

Continuum-wise expansive homeomorphisms with
shadowing
Keonhee Lee and Seunghee Lee |
151 |

On $C$-delta integral of Banach space valued functions on time scales
Ju Han Yoon |
157 |

A short remark on control systems
Hahng-Yun Chu, Se-Hyun Ku, and Seung Ki Yoo |
165 |

Shadowing property on multi-valued dynamical systems
Hahng-Yun Chu, Se-Hyun Ku, and Jong-Suh Park |
171 |

Principal fibrations and generalized $H$-spaces
Yeon Soo Yoon |
177 |

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