Recurring Themes and Images in a Series of Consecutive Rem Dreams

1988 ◽  
Vol 67 (3) ◽  
pp. 767-777E
Author(s):  
Ron Roberts
Keyword(s):  
Mathematical Model ◽  
Storage System ◽  
Consecutive Series ◽  
Limited Capacity ◽  
Nonrandom Pattern

A consecutive series of REM dreams were collected from one subject over a period of four nights and examined for recurring themes and images. Analysis suggested a nonrandom pattern of dreaming consistent with the proposition that the themes and images are held as elements in a limited capacity storage system from which they can be recycled. One such system can be described by means of a simple testable mathematical model. Some of the implications of this are discussed.

Optimization of Solar Terrestrial Power Production Using Heat Engines

1970 ◽  
Vol 92 (2) ◽  
pp. 173-181 ◽  
Author(s):  
M. K. Selc¸uk ◽  
G. T. Ward
Keyword(s):  
Mathematical Model ◽  
Economic Performance ◽  
Storage System ◽  
Power Production ◽  
Design Parameters ◽  
Unsteady State ◽  
Labor Costs ◽  
Specific Design ◽  
Heat Engines ◽  
Power Costs

Mathematical model and computer programs have been developed for the analysis of the economic performance of a terrestrial solar power system using heat engines. Various combinations of cycle, collector, engine, storage system, and sink have been studied and the influence of design parameters on power costs examined for both the steady and unsteady state cases. Typical minimum power costs under central Australian conditions for units of 12 kw capacity at current levels of materials and labor costs range from 7 to 47 U. S. cents per kwh, according to the specific design of installation.

Mathematical Model of the Process of Circuit Charging of an Adsorption Methane Storage System

2019 ◽  
Vol 54 (9-10) ◽  
pp. 760-770 ◽  
Author(s):  
E. M. Strizhenov ◽  
S. S. Chugaev ◽  
A. A. Zherdev
Keyword(s):  
Mathematical Model ◽  
Storage System ◽  
Methane Storage

An improved mathematical model for a pumped hydro storage system considering electrical, mechanical, and hydraulic losses

2019 ◽  
Vol 247 ◽  
pp. 228-236 ◽  
Author(s):  
Navid Mousavi ◽  
Ganesh Kothapalli ◽  
Daryoush Habibi ◽  
Mehdi Khiadani ◽  
Choton K. Das
Keyword(s):  
Mathematical Model ◽  
Storage System ◽  
Hydraulic Losses

Memory Span for Arabic Numerals and Digit Words: Evidence for a Limited-capacity, Visuo-spatial Storage System

1999 ◽  
Vol 52 (2) ◽  
pp. 325-351 ◽  
Author(s):  
Dino Chincotta ◽  
Geoffrey Underwood ◽  
Kartini Abd Ghani ◽  
Eliana Papadopoulou ◽  
Maja Wresinski
Keyword(s):  
Memory Span ◽  
Storage System ◽  
Limited Capacity

Analysis of buffered assembly line productivity

2014 ◽  
Vol 34 (1) ◽  
pp. 34-40 ◽  
Author(s):  
Ryspek Usubamatov ◽  
Abd Alsalam Alsalameh ◽  
Rosmaini Ahmad ◽  
Abdul Rahman Riza
Keyword(s):  
Mathematical Model ◽  
Assembly Line ◽  
Optimal Number ◽  
Limited Capacity ◽  
Content Type ◽  
Maximum Productivity ◽  
Productivity Rate ◽  
Assembly Technology ◽  
Mathematical Equations ◽  
Initial Results

Purpose – The paper aims to study car assembly line, to show its productivity rate, and to derive a mathematical model for the productivity rate of the assembly line segmented into sections with embedded buffers. Design/methodology/approach – The paper performs productivity calculations based on data obtained from the assembly processes of a car and shows the maximum productivity of the assembly line. The equations of the assembly line productivity, the optimal number of assembly stations, and the necessary number of the assembly line's sections with buffers are derived via the criterion of maximum productivity. Findings – The paper provides the productivity diagram of the assembly line that illustrates various measures of productivity, one that depends on the number of assembly stations, the number of sections in the line, and the capacity of the buffers. The diagram is based on the proposed mathematical equations for the productivity of the assembly line as a function of the assembly technology, number of stations, number of sections, and the capacity of the buffer. Research limitations/implications – Solutions towards increasing the productivity of the assembly line are given based on the results of the study and analysis of the assembly processes in real industrial environments. Practical implications – The paper includes the equation for the productivity of the assembly line, which is segmented into sections with limited capacity of the buffers, thereby enabling the calculation of its maximum productivity and the optimal number of assembly stations. Originality/value – The paper presents an analysis of productivity and a mathematical model for calculating the productivity of the assembly line, which is segmented into sections with embedded buffers of limited capacity. The initial results of the research have been obtained from a real industrial environment.

scholarly journals A prospective long-term cytogenetic study in polycythemia vera in relation to treatment and clinical course

Blood ◽  
1988 ◽  
Vol 72 (2) ◽  
pp. 386-395
Author(s):  
B Swolin ◽  
A Weinfeld ◽  
J Westin
Keyword(s):  
Polycythemia Vera ◽  
Chromosome Abnormality ◽  
Cytogenetic Study ◽  
Observation Time ◽  
Chromosome Abnormalities ◽  
Consecutive Series ◽  
Abnormal Karyotype ◽  
Myeloid Metaplasia ◽  
Nonrandom Pattern

This paper reports the results of cytogenetic studies in a consecutive series of 64 patients with polycythemia vera, 57 of whom could be followed prospectively. The median length of the cytogenetic observation time was 93 months (range, 24 to 224 months) after diagnosis. Clonal chromosome abnormalities were observed initially in 11 patients (17%) and later during the course of the disease in another 20 patients. An abnormal karyotype was found in 71% to 80% of the patients who were examined after the development of myeloid metaplasia, myelofibrosis, or leukemia. Patients treated with myelosuppressive agents showed a significantly greater risk of chromosome abnormalities developing than did patients who had been phlebotomized. Acute leukemia developed in eight patients, all of whom had been treated with myelosuppressive agents. A chromosome abnormality preceded the leukemia in only two of the patients. The initial presence of an abnormal karyotype did not predict a greater risk of development of leukemia. No consistent relationship was demonstrated between the occurrence of chromosome abnormalities and the development of myeloid metaplasia and/or myelofibrosis, which was observed in 42% of the patients. The chromosome abnormalities followed a nonrandom pattern, and those most frequently observed were trisomies for 1 q, 8, 9, or 9p and deletion of 20q. Deletions seem to be common and were found in 14 patients.

scholarly journals Radiation of Heat in an Insulating Vacuum Layer

2017 ◽  
Vol 69 (1) ◽  
pp. 87-100
Author(s):  
Mária Minárová
Keyword(s):  
Heat Transfer ◽  
Mathematical Model ◽  
Heat Exchange ◽  
Heat Storage ◽  
Storage System ◽  
Heat Accumulation ◽  
Insulating Layer ◽  
System A ◽  
Set Up ◽  
Heat Transfer By Radiation

Abstract The paper is motivated by the previous research concerning the heat transfer in a heat accumulation device. The device had been explored, built up and tested with the aim of utilization of cheap solar energy and its storage. In this heat storage system, a vacuum-like gap between two concentric containers acts as an insulating layer, radiation being the predominant heat transfer type in the gap. The better knowledge and understanding of the heat exchange by radiation, the more effectiveness of the insulation of the layer can be reached. Heat transfer by radiation is explored in the paper, mathematical model is set up, the algorithm of non-linear transient computation is introduced, and some illustrative results of this computation are performed.

scholarly journals Minimum-storage regenerating codes resistant to special adversary

2021 ◽  
pp. 38-44
Author(s):  
Stanislav Kruglik
Keyword(s):  
Mathematical Model ◽  
Distributed Storage ◽  
Storage System ◽  
Practical Relevance ◽  
Distributed Storage System ◽  
Information Theoretic ◽  
Limited Access ◽  
Reed Solomon Code ◽  
Regenerating Codes ◽  
Erasure Correction

Introduction: In order to deal with temporarily unavailable nodes in a distributed storage system, engineers apply special classes of erasure correction codes. These codes allow you to repair a temporarily unavailable node by downloading small amounts of data from the remaining ones. However, this creates safety threats in the presence of an eavesdropper. Purpose: Introducing a new mathematical model in which the eavesdropper has a limited access to all nodes in the system, and developing codes resistant to it. Methods: Information-theoretic arguments, and mixing information symbols with random ones by systematic Reed — Solomon code.  Results: We introduced a new mathematical model of an eavesdropper with limited access to all nodes in a distributed storage system. Note that the proposed eavesdropper is passive, being unable to change the accessed data. We found parameters for optimal regenerating codes resistant to such adversary, and provided a technique to ensure necessary resistance. As a result, we obtained the construction of optimal minimum storage regenerating codes resistant to such adversary. Practical relevance: The proposed constructions can provide resistance to adversary while ensuring effective data repair.

scholarly journals The Matrix KV Storage System Based on NVM Devices

Micromachines ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 346 ◽  
Author(s):  
Tao Cai ◽  
Fuli Chen ◽  
Qingjian He ◽  
Dejiao Niu ◽  
Jie Wang
Keyword(s):  
Complex I ◽  
Nonvolatile Memory ◽  
Storage System ◽  
Storage Device ◽  
Limited Capacity ◽  
Embedded Processor ◽  
Computing Power ◽  
Management Efficiency ◽  
Collaboration Management ◽  
The Matrix

The storage device based on Nonvolatile Memory (NVM devices) has high read/write speed and embedded processor. It is a useful way to improve the efficiency of Key-Value (KV) application. However it still has some limitations such as limited capacity, poorer computing power compared with CPU, and complex I/O system software. Thus it is not an effective way to construct KV storage system with NVM devices directly. We analyze the characteristics of NVM devices and demands of KV application to design the matrix KV storage system based on NVM Devices. The group collaboration management based on Bloomfilter, intragroup optimization based on competition, embedded KV management based on B+-tree, and the new interface of KV storage system are presented. Then, the embedded processor in the NVM device and CPU can be comprehensively utilized to construct a matrix KV pair management system. It can improve the storage and management efficiency of massive KV pairs, and it can also support the efficient execution of KV applications. A prototype is implemented named MKVS (the matrix KV storage system based on NVM devices) to test with YCSB (Yahoo! Cloud System Benchmark) and to compare with the current in-memory KV store. The results show that MKVS can improve the throughput by 5.98 times, and reduce the 99.7% read latency and 77.2% write latency.

Sign in / Sign up

Export Citation Format

Share Document