scholarly journals Two Effective Strategies to Support Cross-Organization Emergency Resource Allocation Optimization

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Ying Gao ◽  
Cong Liu ◽  
Qingtian Zeng ◽  
Hua Duan
Keyword(s):  
Resource Allocation ◽  
High Efficiency ◽  
Parallel Execution ◽  
Utilization Rate ◽  
Formal Approach ◽  
Emergency Case ◽  
Effective Strategies ◽  
Resource Requirements ◽  
The One ◽  
Emergency Resource

Cross-organization emergency resource allocation optimization problem is essential to guarantee a successful emergency disposal, and it has become a research focus of modern emergency management. Generally speaking, there are two possible types of resource allocation scenarios: (1) if the emergency resources are overallocated, on the one hand, parallel execution of independent emergency activities can be supported and the emergency disposal time is reduced; on the other hand, too many idle resources may cause low resource utilization rate, high scheduling overhead, and high cost; and (2) if emergency resources are underallocated, this may lead to resource conflicts and the need for some emergency activities to wait for others to complete, and finally the emergency disposal time may increase. Therefore, reasonable emergency resource allocation strategies are highly desired. To the best of our knowledge, there is no formal approach to support the cross-organization emergency resource allocation issue. To handle this problem, we propose a two-layered framework to facilitate the allocation of limited emergency resources to meet its time constraints with high efficiency. More specifically, a kind of Petri net extended with time, resource, and message information, denoted as CE-net, is presented to model cross-organization emergency response processes. Based on the obtained CE-net, the minimum resource requirements are obtained with corresponding algorithms. Then, Minimum Execution Time (MET) strategy and Minimum Resource Consumption (MRC) strategy with their corresponding estimated execution intervals are introduced to facilitate the stakeholder to determine which strategy is suitable according to the timing requirements. A cross-organization fire emergency case is applied to validate the proposed approaches throughout the whole paper.

Recent Advances in Heterostructured Photocatalysts for Degradation of Organic Pollutants.

2020 ◽  
Vol 17 ◽  
Author(s):  
Chen-Jing Sun ◽  
Li-Ping Zhao ◽  
Rui Wang
Keyword(s):  
Organic Pollutants ◽  
High Efficiency ◽  
Separation Efficiency ◽  
Organic Pollution ◽  
Utilization Rate ◽  
Type I ◽  
Human Beings ◽  
Global Challenge ◽  
Global Environmental ◽  
High Efficient

: With the development of industrialization, the global environmental pollution and energy crisis are becoming increasingly serious. Organic pollutants pose a serious health threat to human beings and other organisms. The removal of organic pollutants in environment has become a global challenge. The photocatalytic technology has been widely used in the degradation of organic pollutants with its characteristics of simple process, high efficiency, thorough degradation and no secondary pollution. However, the single photocatalyst represented by TiO2 has disadvantages of low light utilization rate and high recombination rate of photocarriers. Building heterojunction is considered one of the most effective methods to enhance the photocatalytic performance of single photocatalyst, which can improve the separation efficiency of photocarriers and utilization of visible light. The classical heterojunction can be divided into four different cases: type I, typeⅡ, p–n heterojunctions and Z-scheme junction. In this paper, the recent progress in the treatment of organic pollution by heterostructure photocatalysts is summarized and the mechanism of heterostructure photocatalysts for the treatment of organic pollutants is reviewed. It is expected that this paper can deepen the understanding of heterostructure photocatalysts and provide guidance for high efficient photocatalytic degradation of organic pollutants in the future.

scholarly journals On Performance of Sparse Fast Fourier Transform Algorithms Using the Aliasing Filter

Electronics ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1117
Author(s):  
Bin Li ◽  
Zhikang Jiang ◽  
Jie Chen
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
High Efficiency ◽  
Theory And Practice ◽  
Long Time ◽  
And Performance ◽  
Binary Tree Search ◽  
The One ◽  
Sparse Fast Fourier Transform ◽  
L1 And L2

Computing the sparse fast Fourier transform (sFFT) has emerged as a critical topic for a long time because of its high efficiency and wide practicability. More than twenty different sFFT algorithms compute discrete Fourier transform (DFT) by their unique methods so far. In order to use them properly, the urgent topic of great concern is how to analyze and evaluate the performance of these algorithms in theory and practice. This paper mainly discusses the technology and performance of sFFT algorithms using the aliasing filter. In the first part, the paper introduces the three frameworks: the one-shot framework based on the compressed sensing (CS) solver, the peeling framework based on the bipartite graph and the iterative framework based on the binary tree search. Then, we obtain the conclusion of the performance of six corresponding algorithms: the sFFT-DT1.0, sFFT-DT2.0, sFFT-DT3.0, FFAST, R-FFAST, and DSFFT algorithms in theory. In the second part, we make two categories of experiments for computing the signals of different SNRs, different lengths, and different sparsities by a standard testing platform and record the run time, the percentage of the signal sampled, and the L0, L1, and L2 errors both in the exactly sparse case and the general sparse case. The results of these performance analyses are our guide to optimize these algorithms and use them selectively.

scholarly journals Study on a Novel High-Efficiency Bridgeless PFC Converter

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Cao Taiqiang ◽  
Chen Zhangyong ◽  
Wang Jun ◽  
Sun Zhang ◽  
Luo Qian ◽  
...  
Keyword(s):  
Steady State ◽  
High Efficiency ◽  
Control Policy ◽  
Switching Frequency ◽  
Fast Recovery ◽  
Zero Current Switching ◽  
Zero Current ◽  
The One ◽  
Gain Characteristic ◽  
Conduction Mode

In order to implement a high-efficiency bridgeless power factor correction converter, a new topology and operation principles of continuous conduction mode (CCM) and DC steady-state character of the converter are analyzed, which show that the converter not only has bipolar-gain characteristic but also has the same characteristic as the traditional Boost converter, while the voltage transfer ratio is not related with the resonant branch parameters and switching frequency. Based on the above topology, a novel bridgeless Bipolar-Gain Pseudo-Boost PFC converter is proposed. With this converter, the diode rectifier bridge of traditional AC-DC converter is eliminated, and zero-current switching of fast recovery diode is achieved. Thus, the efficiency is improved. Next, we also propose the one-cycle control policy of this converter. Finally, experiments are provided to verify the accuracy and feasibility of the proposed converter.

Design and development of a navigation system for agricultural aerial spraying

2017 ◽  
Vol 8 (2) ◽  
pp. 870-875
Author(s):  
M. J. Zhang ◽  
R. R. Zhang ◽  
G. Xu ◽  
L. P. Chen
Keyword(s):  
Real Time ◽  
Navigation System ◽  
High Efficiency ◽  
Route Planning ◽  
Utilization Rate ◽  
Tablet Pc ◽  
Design And Development ◽  
Heavy Workload ◽  
Aerial Spraying ◽  
Time Evaluation

Problems in the process of manned agricultural aerial spraying, such as heavy workload in route planning, overlaps or omissions in spraying seriously reduce the efficiency of spraying and utilization rate of pesticides. This paper presents the design and development of a navigation system for manned agricultural aerial spraying based on an industrial tablet PC. This system provides three key functions: route planning, spraying navigation and real-time evaluation of spraying quality. The test and application results show that this system has high efficiency in route planning, and the average coverage rate of spraying could reach as high as 96%. Its application effect is remarkable, and as a result, this system can meet the demand of manned agricultural aerial spraying in route planning and navigation.

scholarly journals Biological safety cabinetry.

1991 ◽  
Vol 4 (2) ◽  
pp. 207-241 ◽  
Author(s):  
R H Kruse ◽  
W H Puckett ◽  
J H Richardson
Keyword(s):  
Antineoplastic Agents ◽  
High Efficiency ◽  
Class Ii ◽  
Class Iii ◽  
Clean Room ◽  
Air Filter ◽  
Biological Safety ◽  
Design Function ◽  
Laboratory Workers ◽  
The One

The biological safety cabinet is the one piece of laboratory and pharmacy equipment that provides protection for personnel, the product, and the environment. Through the history of laboratory-acquired infections from the earliest published case to the emergence of hepatitis B and AIDS, the need for health care worker protection is described. A brief description with design, construction, function, and production capabilities is provided for class I and class III safety cabinets. The development of the high-efficiency particulate air filter provided the impetus for clean room technology, from which evolved the class II laminar flow biological safety cabinet. The clean room concept was advanced when the horizontal airflow clean bench was manufactured; it became popular in pharmacies for preparing intravenous solutions because the product was protected. However, as with infectious microorganisms and laboratory workers, individual sensitization to antibiotics and the advent of hazardous antineoplastic agents changed the thinking of pharmacists and nurses, and they began to use the class II safety cabinet to prevent adverse personnel reactions to the drugs. How the class II safety cabinet became the mainstay in laboratories and pharmacies is described, and insight is provided into the formulation of National Sanitation Foundation standard number 49 and its revisions. The working operations of a class II cabinet are described, as are the variations of the four types with regard to design, function, air velocity profiles, and the use of toxins. The main certification procedures are explained, with examples of improper or incorrect certifications. The required levels of containment for microorganisms are given. Instructions for decontaminating the class II biological safety cabinet of infectious agents are provided; unfortunately, there is no method for decontaminating the cabinet of antineoplastic agents.

scholarly journals Features of coping in patients with cerebrovascular pathology at different stages of diseases

2018 ◽  
Keyword(s):  
High Efficiency ◽  
Clinical Manifestations ◽  
Stressful Events ◽  
Psychological Help ◽  
Cerebrovascular Pathology ◽  
Ways Of Coping Questionnaire ◽  
Psychosocial Resource ◽  
Psychological Balance ◽  
The One

Coping is an important component in adapting a person to stressful events and maintaining a psychological balance. The aim of this work was to study the features of coping in patients with cerebrovascular pathology (CVP) in the dynamics of its development at different stages of the disease. At Kharkiv Regional Clinical Hospital - Emergency and Emergency Medicine Center during 2016-2018, observed 383 patients with cerebrovascular pathology on different stage of diseases. The coping assessed by using the Ways of Coping Questionnaire R. Lazarus & S. Folkman. In persons with high risk of CVP, clinical manifestations of CVP and patients after a stroke generally defined more tension of coping than in somatic healthy people. There occurred an imbalance forms of coping with low and high efficiency, dominated confrontation, distancing, avoidance versus problem solving, positive revaluation, increasing the role of social support as external psychosocial resource. Therefore, patients at various stages of CVP had unstable stress coping-profile that was on the one hand the basis for the development of stressrelated psychosomatic changes, on the other – not correctly solve the existing stress. Detection and psychological correction of ineffective coping strategies in patients with CVP is an important component of psychological help for this contingent of patients.

scholarly journals A Historical Overview Upon the Use of Amphetamine Derivatives in the Treatment of Obesity

2020 ◽  
Author(s):  
Ștefana Stăcescu ◽  
Gabriel Hancu ◽  
Denisa Podar ◽  
Ștefania Todea ◽  
Amelia Tero-Vescan
Keyword(s):  
High Efficiency ◽  
Lifestyle Modification ◽  
Term Treatment ◽  
Current Status ◽  
Historical Overview ◽  
Short Term ◽  
Short Term Treatment ◽  
Treatment Of Obesity ◽  
Amphetamine Derivatives ◽  
The One

Relatively few medications are available for the management of obesity and all are indicated as adjuncts to increased physical activity, caloric restriction and lifestyle modification. Among different weight-loss drugs, the most intriguing and controversial class is the one of anorexic amphetamines, due to their high efficiency but also relevant side-effects. Several previously approved anorexic amphetamines like fenfluramine, phenylpropanolamine, phenmetrazine and sibutramine have been withdrawn from the market due to unanticipated adverse effects. Nowadays only four amphetamine derivatives are approved for short-term treatment of obesity: amfepramone, benzphetamine, phendimetrazine and phentermine. The article provides an overview of both the history, and the current status, of the use of amphetamine derivatives in the obesity pharmacotherapy. J Pharm Care 2019; 7(3): 75-82.

LIMITS OF JUDICIAL DISCRETION IN ASSESSING THE LEGAL BEHAVIOR AND LEGAL EFFECTIVENESS

2021 ◽  
Vol 10 (6) ◽  
pp. 84-100
Author(s):  
N.V. ZAYTSEVA
Keyword(s):  
Civil Society ◽  
Law Enforcement ◽  
Legal Regulation ◽  
Current Level ◽  
Judicial Discretion ◽  
Social Phenomenon ◽  
Formal Approach ◽  
The Will ◽  
The Law ◽  
The One

The article is devoted to the study of the concept of legal effectiveness in the context of the goals and purpose of law in general and separately in the private law relations. Since the law is a complex social phenomenon, the author paid special attention to the issues of refraction of normative tasks through the prism of judicial discretion. Law enforcement practice, on the one hand, shows the viability of a particular norm and its compliance with the current level of development of civil society, however, it can also distort the spirit of the law, which will not allow achieving the necessary legal result. Judicial discretion regarding the interpretation of certain legal elements and in assessing the behavior of participants in legal relations can lead to the transformation of legal relations, which does not allow to realize the goals set by the subjects. It is noted that the regulation of the limits of judicial discretion would help to ensure effective legal regulation. Assessing the behavior of participants due to the lack of mechanisms for proving the actual intentions of the parties is difficult for most countries of the continental legal system; therefore, a formal approach prevails and qualifies the will of the parties recorded exclusively in writing.

scholarly journals A Multiobjective Allocation Model for Emergency Resources That Balance Efficiency and Fairness

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Yanyan Wang ◽  
Baiqing Sun
Keyword(s):  
Resource Allocation ◽  
Particle Swarm Optimization ◽  
Particle Swarm ◽  
Allocation Model ◽  
Swarm Optimization ◽  
Emergency Relief ◽  
Resource Allocation Model ◽  
Proposed Model ◽  
Emergency Resource

Efficiency and fairness are two important goals of disaster rescue. However, the existing models usually unilaterally consider the efficiency or fairness of resource allocation. Based on this, a multiobjective emergency resource allocation model that can balance efficiency and fairness is proposed. The object of the proposed model is to minimize the total allocating costs of resources and the total losses caused by insufficient resources. Then the particle swarm optimization is applied to solve the model. Finally, a computational example is conducted based on the emergency relief resource allocation after Ya’an earthquake in China to verify the applicability of the proposed model.

Sign in / Sign up

Export Citation Format

Share Document