• 제목/요약/키워드: Positive recurrent processes

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Asymptotic Distributions of Maximum Queue Lengths for M/G/1 and GI/M/i Systems

  • Park, You-Sung
    • Journal of the Korean Statistical Society
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    • 제24권1호
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    • pp.19-29
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    • 1995
  • In this paper, we investigate the asymptotic distributions of maximum queue length for M/G/1 and GI/M/1 systems which are positive recurrent. It is well knwon that for any positive recurrent queueing systems, the distributions of their maxima linearly normalized do not have non-degenerate limits. We show, however, that by concerning an array of queueing processes limiting behaviors of these maximum queue lengths can be established under certain conditions.

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SOME LIMIT THEOREMS FOR POSITIVE RECURRENT AGE-DEPENDENT BRANCHING PROCESSES

  • Kang, Hye-Jeong
    • 대한수학회지
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    • 제38권1호
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    • pp.25-35
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    • 2001
  • In this paper we consider an age dependent branching process whose particles move according to a Markov process with continuous state space. The Markov process is assumed to the stationary with independent increments and positive recurrent. We find some sufficient conditions for he Markov motion process such that the empirical distribution of the positions converges to the limiting distribution of the motion process.

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LOCATING ROOTS OF A CERTAIN CLASS OF POLYNOMIALS

  • Argyros, Ioannis K.;Hilout, Said
    • East Asian mathematical journal
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    • 제26권3호
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    • pp.351-363
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    • 2010
  • We introduce a special class of real recurrent polynomials $f_m$$($m{\geq}1$) of degree m+1, with positive roots $s_m$, which are decreasing as m increases. The first root $s_1$, as well as the last one denoted by $s_{\infty}$ are expressed in closed form, and enclose all $s_m$ (m > 1). This technique is also used to find weaker than before [6] sufficient convergence conditions for some popular iterative processes converging to solutions of equations.

Altered expression of parvalbumin immunoreactivity in rat main olfactory bulb following pilocarpine-induced status epilepticus

  • Yu, Yeon Hee;Park, Dae-Kyoon;Yoo, Dae Young;Kim, Duk-Soo
    • BMB Reports
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    • 제53권4호
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    • pp.234-239
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    • 2020
  • Epilepsy is a chronic neurological disease characterized by spontaneous recurrent seizures and caused by various factors and mechanisms. Malfunction of the olfactory bulb is frequently observed in patients with epilepsy. However, the morphological changes in the olfactory bulb during epilepsy-induced neuropathology have not been elucidated. Therefore, in the present study, we investigated the expression of parvalbumin (PV), one of the calcium-binding proteins, and morphological changes in the rat main olfactory bulb (MOB) following pilo-carpine-induced status epilepticus (SE). Pilocarpine-induced SE resulted in neuronal degeneration in the external plexiform layer (EPL) and glomerular layer (GL) of the MOB. PV immunoreactivity was observed in the neuronal somas and processes in the EPL and GL of the control group. However, six hours after pilocarpine administration, PV expression was remarkably decreased in the neuronal processes compared to the somas and the average number of PV-positive interneurons was significantly decreased. Three months after pilocarpine treatment, the number of PV-positive interneurons was also significantly decreased compared to the 6 hour group in both layers. In addition, the number of NeuN-positive neurons was also significantly decreased in the EPL and GL following pilocarpine treatment. In double immunofluorescence staining for PV and MAP2, the immunoreactivity for MAP2 around the PV-positive neurons was significantly decreased three months after pilocarpine treatment. Therefore, the present findings suggest that decreases in PV-positive GABAergic interneurons and dendritic density in the MOB induced impaired calcium buffering and reciprocal synaptic transmission. Thus, these alterations may be considered key factors aggravating olfactory function in patients with epilepsy.

업종별 프랜차이즈 선택결정요인이 가맹점 성과의 만족도와 성공·실패에 미치는 영향연구 (A Study on the Effects of the Characteristics of Franchise Business Members on Affiliate Outcomes)

  • 장재남;강창동;안성식
    • 유통과학연구
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    • 제9권2호
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    • pp.49-59
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    • 2011
  • 한국프랜차이즈산업은 1970년대 도입된 이후, 외식업, 도·소매업, 서비스업 등 광범위한 영역에 국민생활과 밀접한 지식기반서비스산업으로 고성장을 지속하고 있다. 이제 국내 프랜차이즈산업은 양적성장에서 질적 성장으로의 전환을 통한 새로운 도약을 준비해야 할 시기이다. 무엇보다도 중요한 것은 가맹본부와 가맹점 사업자 간의 신뢰구축을 위한 가맹본부와 가맹점사업자의 노력과 실천이다(Stanworth & Kaufmana, 1995). 가맹본부와 가맹점사업자간의 우호적이고 신뢰할 수 있는 관계(Relationship)야 말로 프랜차이즈에 대한 불신을 해소하고 건강한 프랜차이즈시스템을 유지할 수 있는 근간이기도 하다. 가맹사업을 하고자 하는 가맹본부는 프랜차이즈산업의 지속적인 성장과 발전을 위해서 가맹점창업의 성공에 많은 영향을 미치는 항목이 무엇인지를 파악해야 한다. 따라서, 가맹점 사업성과의 만족도와 가맹점 사업성공·실패에 미치는 가맹점의 선택속성이 무엇인지를 파악하고 업종별로 차이가 있다는 것을 밝히려는 연구의 목적이 있다. 본 연구는 가맹사업을 하고 있는 가맹본부나 예비 가맹본부 창업자들이 가맹점 모집뿐만 아니라 가맹점 지원시스템 구축력, 브랜드력, 가맹점의 상권 경쟁력, 교육·훈련 프로그램 수준, 가맹점사업자의 금융비용, 가맹점본부와 가맹점사업자와의 파트너쉽, 마케팅 믹스 관리능력(제품, 가격조건, 물류 및 배송서비스, 프로모션, 슈퍼바이징과 슈퍼바이저, 업무절차·과정, 물리적 증거)에 투자와 활동을 집중해야 가맹점의 성공가능성이 높아진다는 것을 시사하고 있다. 가맹점 예비창업자들이 우수한 가맹본부를 선택하기 위해 가장 크게 고려하는 사항은 가맹본부의 특성이다. 특히 가맹점에 대한 가맹본부의 지원은 가맹점의 사업성과와 만족도를 높이고 결과적으로 적극적인 추천이나 재 계약률을 높일 수 있다.

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