scholarly journals Theoretical analysis of the cost of antagonistic activity for aquatic bacteria in oligotrophic environments

2015 ◽  
Vol 6 ◽  
Author(s):  
Eneas Aguirre-von-Wobeser ◽  
Luis E. Eguiarte ◽  
Valeria Souza ◽  
Gloria Soberón-Chávez
Keyword(s):  
Theoretical Analysis ◽  
Antagonistic Activity ◽  
Aquatic Bacteria ◽  
The Cost

Influence of inter-organizational relations on methods of calculating the cost of production of agricultural organizations

2020 ◽  
pp. 13-20 ◽  
Author(s):  
Anastasiya Alekseevna Romanova
Keyword(s):  
Theoretical Analysis ◽  
Cost Calculation ◽  
Interorganizational Cooperation ◽  
Organizational Relations ◽  
Interorganizational Management ◽  
Calculation System ◽  
Analytical System ◽  
Definition Of ◽  
The Cost ◽  
Organizational Cooperation

The author’s definition of inter-organizational cooperation, interorganizational management accounting and inter-organizational accounting and analytical system and cost calculation system in the framework of inter-organizational relations is given in the article on the basis of theoretical analysis. The features of calculating the cost of interorganizational cooperation are defined, new accounting practices are described, the advantages of implementing this type of accounting are identified, and possible problem areas are identified.

DFCWs Design Based on Improved DPSO

2013 ◽  
Vol 333-335 ◽  
pp. 623-627
Author(s):  
Jing Jun Li ◽  
Yong Hua Jiang ◽  
Bo Dan ◽  
Wei Wei Gao
Keyword(s):  
Theoretical Analysis ◽  
Cross Correlation ◽  
Correlation Energy ◽  
Code Length ◽  
Discrete Particle ◽  
Frequency Coding ◽  
Simulation Results ◽  
The Cross ◽  
The Cost ◽  
Correlation Level

Orthogonal discrete frequency coding waveforms(DFCWs) is an ideal quasi-orthogonal waveform. This paper analyses the ambiguity function of DFCWs and the results indicate that the correlation characteristics of DFCWs have only relationship with the code length and coding order. Based on the theoretical analysis, we defined the cross-correlation energy as the cost function, and used the improved discrete particle swarmoptimization(DPSO) to optimize the order of DFCWs. The new signal can effectively restrain the cross-correlation level between the two DFCWs. Simulation results verify the effectiveness of the designed DFCWs.

scholarly journals Understanding the Value of Fulfillment Flexibility in an Online Retailing Environment

2021 ◽  
Author(s):  
Levi DeValve ◽  
Yehua Wei ◽  
Di Wu ◽  
Rong Yuan
Keyword(s):  
Theoretical Analysis ◽  
Numerical Simulations ◽  
Problem Definition ◽  
Order Fulfillment ◽  
Distribution Centers ◽  
Online Retailing ◽  
New Class ◽  
Managerial Implications ◽  
The Cost ◽  
Improve Service Quality

Problem definition: Fulfillment flexibility, the ability of distribution centers (DCs) to fulfill demand originating from other DCs, can help e-retailers reduce lost sales and improve service quality. Because the cost of full flexibility is prohibitive, we seek to understand the value of partially flexible fulfillment networks under simple and effective fulfillment policies. Academic/practical relevance: We propose a general method for understanding the practical value of (partial) fulfillment flexibility using a data-driven model, theoretical analysis, and numerical simulations. Our method applies to settings with local fulfillment (i.e., order fulfillment from the originating DC) prioritization and possible customer abandonment, two features that are new to the fulfillment literature. We then apply this method for a large e-retailer. We also introduce a new class of spillover limit fulfillment policies with attractive theoretical and practical features. Methodology: Our analysis uses dynamic and stochastic optimization, applied probability, and numerical simulations. Results: We derive optimal fulfillment policies in stylized settings, as well as bounds on the performance under an optimal policy using theoretical analysis, to provide guidelines on which policies to test in numerical simulations. We then use simulations to estimate for our industrial partner that a proposed fulfillment network with additional flexibility equates to a profit improvement on the order of tens of millions of U.S. dollars. Managerial implications: We provide an approach for e-retailers to understand when fulfillment flexibility is most valuable. We find that fulfillment flexibility provides the most benefit for our collaborator when gross profits are high relative to fulfillment costs or centrally held inventory is low. Also, we identify the risks of myopic fulfillment with additional flexibility and demonstrate that an effective spillover limit policy mitigates these risks.

scholarly journals Development of technology for obtaining starch gluing modified with uzkhitan and hydrolyzed emulsion

2021 ◽  
Vol 2094 (4) ◽  
pp. 042070
Author(s):  
Salokhiddin Mardonov ◽  
Laziz Shokirov ◽  
Khakim Rakhimov
Keyword(s):  
Theoretical Analysis ◽  
Rheological Properties ◽  
Carboxymethyl Cellulose ◽  
Corn Starch ◽  
Acrylic Emulsion ◽  
Pass Through ◽  
Materials Used ◽  
The Cost

Abstract In this article, in order to reduce the consumption of starch for gluing warp threads and reduce the cost of sizing materials used in sizing and improve the quality of threads, an effective gluing composition was created based on a hydrolyzed acrylic emulsion (GAE) and uzkhitan (chitosan and carboxymethyl cellulose), that is, corn starch polymer and studied their rheological properties. In the article, the main threads passing through the gluing process and moving at a certain speed, which are then impregnated with liquid gluing. Then they pass through a nip roller and a drying drum, are subjected to friction and form a layer of a certain thickness. A theoretical analysis of the surface of the warp threads is carried out to determine the change in the diameter of the threads when a layer of a certain thickness is formed on their surface.

Modern tools for deep cost analysis in the cost management system in the inter-organizational relations of agricultural formations

2021 ◽  
pp. 6-14
Author(s):  
L. I. Khoruzhy ◽  
Y. N. Katkov ◽  
Anastasiya Alekseevna Romanova
Keyword(s):  
Theoretical Analysis ◽  
Cost Analysis ◽  
Management System ◽  
Business Processes ◽  
Cost Management ◽  
Management Accounting ◽  
Organizational Relations ◽  
The Cost ◽  
Organizational Cooperation

The article, based on the theoretical analysis and study of the forms of setting up management accounting of inter-organizational agricultural formations, presents the place and role of digital doubles as tools for implementing the system of management accounting of interorganizational interaction of agricultural partner companies. The advantages of using digital doubles in agricultural companies, which have a significant impact on the inter-organizational cooperation of agricultural companies, are revealed. The complexity of the implementation and use of modern management accounting methods in identifying deviations in business processes is revealed.

Modeling enrichment kinetics from dynamic 13C-NMR spectra: theoretical analysis and practical considerations

1997 ◽  
Vol 272 (6) ◽  
pp. C2037-C2048 ◽  
Author(s):  
X. Yu ◽  
N. M. Alpert ◽  
E. D. Lewandowski
Keyword(s):  
Theoretical Analysis ◽  
Cost Function ◽  
Noise Level ◽  
Tricarboxylic Acid Cycle ◽  
Data Fitting ◽  
Biochemical Assays ◽  
Low Concentrations ◽  
13C Nuclear Magnetic Resonance ◽  
The Individual ◽  
The Cost

Measurements of oxidative metabolism in the heart from dynamic 13C nuclear magnetic resonance (NMR) spectroscopy rely on 13C turnover in the NMR-detectable glutamate pool. A kinetic model was developed for the analysis of isotope turnover to determine tricarboxylic acid cycle flux (VTCA) and the interconversion rate between alpha-ketoglutarate and glutamate (F1) by fitting the model to NMR data of glutamate enrichment. The results of data fitting are highly reproducible when the noise level is within 10%, making this model applicable to single or grouped experiments. The values for VTCA and F1 were unchanged whether obtained from least-squares fitting of the model to mean experimental enrichment data with standard deviations in the cost function (VTCA = 10.52 mumol.min-1.g dry wt-1, F1 = 10.67 mumol.min-1.g dry wt-1) or to the individual enrichment values for each heart with the NMR noise level in the cost function (VTCA = 10.67 mumol.min-1.g dry wt-1, F1 = 10.18 mumol.min-1.g dry wt-1). Computer simulation and theoretical analysis indicate that glutamate enrichment kinetics are insensitive to the fractional enrichment of acetyl-CoA and changes in small intermediate pools (< 1 mumol/g dry wt). Therefore, high-resolution NMR analysis of tissue extracts and biochemical assays for intermediates at low concentrations are unnecessary. However, a high correlation between VTCA and F1 exists, as anticipated from competition for alpha-ketoglutarate, which indicates the utility of introducing independent experimental constraints into the data fitting for accurate quantification.

scholarly journals Online algorithms for scheduling transactions on python software transactional memory

2019 ◽  
Vol 16 (1) ◽  
pp. 85-104 ◽  
Author(s):  
Marko Popovic ◽  
Branislav Kordic ◽  
Miroslav Popovic ◽  
Ilija Basicevic
Keyword(s):  
Theoretical Analysis ◽  
Online Algorithms ◽  
Time Complexity ◽  
Transactional Memory ◽  
Scheduling Algorithms ◽  
Software Transactional Memory ◽  
Transaction Scheduling ◽  
The Cost ◽  
Time Bounds

Designing online transaction scheduling algorithms is challenging because one needs to reconcile three opposing requirements: (i) they should be fast, (ii) they should minimize make span and maximize throughput, and (iii) they should produce conflict-free transaction schedules. In this paper we present four online transaction scheduling algorithms, namely, RR, ETLB, AC, and AAC algorithm, we prove their correctness and time bounds, and we conduct a theoretical analysis of the transaction schedules they produce, using three different workloads (RDW, CFW, and WDW). Finally, we compare various features of the four algorithms. The results are as expected, as we go from RR, over ETLB and AC, to AAC algorithms, the quality of the resulting schedules increases at the cost of increase of algorithm?s time complexity.

Cost Implications of Event Recordings In Apnea/Bradycardia Home Monitoring: A Theoretical Analysis

PEDIATRICS ◽  
1995 ◽  
Vol 95 (3) ◽  
pp. 378-380
Author(s):  
Alfred Steinschneider ◽  
Vicki Santos ◽  
Gary Freed
Keyword(s):  
Theoretical Analysis ◽  
Skin Color ◽  
Color Change ◽  
Home Monitoring ◽  
Sudden Infant Death ◽  
Patient Treatment ◽  
Sudden Infant ◽  
Integral Component ◽  
Wave Forms ◽  
The Cost

Objectives. To evaluate the financial impact of incorporating event recordings as an integral component of home apnea/bradycardia monitoring. Study design. This theoretical analysis examines the cost of home monitoring when medical decisions are based on an evaluation of the cardiorespiratory wave-forms surrounding each apnea/bradycardia monitor alarm (documented monitoring) compared to those based on parental observations. Data for both approaches were obtained from 155 infants referred within the first 10 days of life, because a sibling died of sudden infant death syndrome. All were followed on an impedance type apnea/bradycardia monitor with an attached event recorder. The monitor settings were 20 seconds for apnea and 80 beats per minute (bpm) for bradycardia. Parents were taught how to use the equipment, resuscitative techniques, and to complete an alarm log. The clinical protocol provided for home monitoring until there were no "episodes" (prolonged apnea or prolonged bradycardia) for 16 consecutive weeks. A polysomnogram would be obtained if an "episode" occurred. For each infant two independent approaches were used to judge the occurrence of an "episode": (1) parental report of an apnea alarm occurring during sleep or a physiologic alarm associated with skin color change or resuscitative intervention and (2) apnea ≥ 20 seconds long or bradycardia ≥ 10 seconds. The cost was calculated assuming a 4-week monitor rental fee of $350, a 4-week waveform interpretation fee of $180, and a $600 fee for performing and interpreting a polysomnogram. Results. Episodes defined from an interpretation of the cardiorespiratory waveforms resulted in fewer diagnostic studies, a shorter period of home monitoring, and lower per patient treatment costs. Conclusion. Despite the increased monthly cost, incorporating event recordings as an integral component of home monitoring resulted in a lower average per patient cost.

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