Strong Stability Preserving IMEX Methods for Partitioned Systems of Differential Equations

We investigate strong stability preserving (SSP) implicit-explicit (IMEX) methods for partitioned systems of differential equations with stiff and nonstiff subsystems. Conditions for order p and stage order $$q=p$$ q = p are derived, and characterization of SSP IMEX methods is provided following the recent work by Spijker. Stability properties of these methods with respect to the decoupled linear system with a complex parameter, and a coupled linear system with real parameters are also investigated. Examples of methods up to the order $$p=4$$ p = 4 and stage order $$q=p$$ q = p are provided. Numerical examples on six partitioned test systems confirm that the derived methods achieve the expected order of convergence for large range of stepsizes of integration, and they are also suitable for preserving the accuracy in the stiff limit or preserving the positivity of the numerical solution for large stepsizes.

RE-READING MUSTANG IN THE CONTEXT OF THE IDEOLOGICAL COMPONENTS OF NARRATIVE

Representation of the female body has been one of the most emphasized issues in gender debates. To refrain from reproducing the patriarchal ideology, it is important to be careful with the distinction between the body being tabooed and covered or transformed into an object of consumption under the name of freedom. The sexualization and objectification of the female body has taken place in the historical process. In many products from works of art to mass media, the woman, who is a passive object in front of the man who is the active/subject, is presented to the consumption of the male gaze. In almost every branch of art, from photography to cinema, the female body has been the object of the gaze and has been turned into an object of desire by being removed from the subject identity. Even in films that are claimed to be made with a woman's point of view and against gender discourses, the female body is sometimes objectified with elements such as the stage order, lighting, and perspective preferences. In this study, which aims to reveal how cinematographic elements can change the world of meaning, the first film of Deniz Gamze Ergüven, Mustang (2015), was discussed with feminist criticism in the axis of object-body by giving examples from various art branches in terms of cinematographic preferences. As a result of the study, it has been determined that the film, which claims to have set out with critical point of view, reproduces the discourses it tries to criticize. The reason for this is that the film falls into the traps of patriarchal ideology.

Study of Anonymity and Supervision Based on Negotiable Securities Information System

The financial services industry continues to innovate, every day the face of complex trading environment, risk-based supervision has become a serious and important work, how to use technology to enhance the efficiency of supervision and financial regulation capacity, reduce fraud and regulatory costs, effectively guard against financial risk management mechanism. This study takes this concept as the starting point and uses the framework and process of securities industry transactions to be divided into 8 stages: registration stage, account issuance stage, order placement stage, order confirmation stage, transaction return stage, report business stage, data query and supervision and inspection stage, combined with ElGamal play algorithm to meet the requirements of the securities regulatory process, propose a set can have stealth, can not be tampered with, security mechanism and double-blind and other securities regulatory system.

Solving Multi-Robot Picking Problem in Warehouses: a Simulation Approach

This paper focuses on the order batching problem, aiming at this order batching problem of an e-commerce unmanned warehouse multi-robot picking system, considering the complexity and uncertainty of the system. In this paper establishes a two-stage model with the objective function of maximizing the sum of the average similarity of each picking station and balancing the picking station picking times, and uses a dynamic clustering algorithm to solve the model. The simulation results show that a two-stage order batching model that considers the order similarity and the picking time balance can be established, which can reduce the number of shelves effectively and improve the picking efficiency of warehouse multi-robot system.

Cellular dialogues that enable self-organization of dynamic spatial patterns

SummaryCells form spatial patterns by coordinating their gene expressions. How a group of mesoscopic numbers (hundreds-to-thousands) of cells, without pre-defined morphogens and spatial organization, self-organizes spatial patterns remains incompletely understood. Of particular importance are dynamic spatial patterns - such as spiral waves that perpetually move and transmit information over macroscopic length-scales. We developed an open-source, expandable software that can simulate a field of cells communicating with any number of cell-secreted molecules in any manner. With it and a theory developed here, we identified all possible “cellular dialogues” - ways of communicating with two diffusing molecules - and core architectures underlying them that enable diverse, self-organized dynamic spatial patterns that we classified. The patterns form despite widely varying cellular response to the molecules, gene-expression noise, and spatial arrangement and motility of cells. Three-stage, “order-fluctuate-settle” process forms dynamic spatial patterns: cells form long-lived whirlpools of wavelets that, through chaos-like interactions, settle into a dynamic spatial pattern. These results provide a blueprint to help identify missing regulatory links for observed dynamic-pattern formations and in building synthetic tissues.

Research on Two-stage Order Picking Sequencing for Intensive Shelf

The increasingly usage of Intensive shelves, greatly increase the utilization of storage space, but also is more demanding on order picking time . Based on the storage layout of intensive mobile shelves, this paper combines the time cost of shelf movement with the moving distance under the guidance of seeking global optimum. Transform the single order picking process into TSP problem, while considering the picking process. The waiting cost of the order, and the minimum of the picking cost and the waiting cost of the whole batch of orders requiring shelf movement, to establish a two-stage mathematical model of the order picking order. Then, the algorithm for solving the model is designed, and the simulation is carried out by numerical examples to illustrate the law and characteristics of the problem more vividly, in order to provide reference and reference for the order picking activities of intensive mobile shelves.

PENGARUH PERSEPSI KUALITAS PELAYANAN E-COMMERCE TERHADAP KEPUASAN PELANGGAN, KEPERCAYAAN DAN LOYALITAS PADA PRODUK FASHION

<p><em>T</em><em>he specifics</em><em> </em><em>goal</em><em> of study are</em><em> namely to explain the influence of (1) Quality of Service Satisfaction, (2) Service Quality of the Trust, (3) Service Quality to Loyalty (4) Satisfaction to Loyalty, </em><em>and </em><em>(5) of the Loyalty Trust.</em><em> </em><em>The population in this study are all consumers who had conducted the transaction in Saqina.com. The number of respondents was used a sample of 250 respondents.</em></p><p><em>The population in this study are all consumers who had conducted the transaction in Saqina.com. The number of respondents was used a sample of 250 respondents. The results showed a significant effect of interaction between variables in the four effects, namely: (1) Quality of Service Satisfaction (CR = 5578), (2) Quality of Service Trust (CR = 5164), (3) Satisfaction to Loyalty (CR = 2009 ), (4) of the Loyalty Trust (CR = 2144), whereas no significant effect of the Service Quality to Loyalty (CR = -1766)</em><em>, calculation results also showed that the total effect of Trust is a mediating variable between Service Quality to Loyalty.</em><em></em></p><p><em>As for the stimulus to do the marketing, among others, are (1) </em><em>maintain a COD service to increase customer trust, (2) </em><em>optimize customer satisfaction through improved service, the information presented better organized so that consumers more easily and comfortably in the transaction, (</em><em>3</em><em>) Provide a stage 'order tracking' for customers, so customers can monitor the extent to which the development of product orders. For future studies are expected to (1) Develop more variables studied, (2) Perform the comparison e-commerce both in Indonesia and internationally.</em><strong><em></em></strong></p>