operational methods
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2021 ◽  
Vol 16 (3) ◽  
pp. 359-371
Author(s):  
A.Q. Huang ◽  
Y.Q. Zhang ◽  
Z.F. He ◽  
G.W. Hua ◽  
X.L. Shi

Electric vehicle battery recharging on the swapping mode has grown up as an important option other than the plug-in recharging mode in China, given that several auto giants have been dedicated in constructing their battery swapping systems. However, the lack of effective operational methods on battery recharging and transportation scheduling has aroused a big challenge on the practical application of the swapping mode, which enables the necessity of our work. This study proposes a joint optimization model of recharging and scheduling of electric vehicle batteries with a dynamic electricity price system which is able to identify the optimal charging arrangement (the recharging time and the quantity of recharging batteries) as well as the optimal transportation arrangement (the transportation time and the quantity of transporting batteries). For the validation purpose, a numerical study is implemented based on dynamic electricity prices in Beijing. A sensitivity analysis of parameters is carried out to increase the robustness and provide more managerial insights of the model.


2021 ◽  
Vol 32 (1) ◽  
pp. 90-90
Author(s):  
S. A. Belsky
Keyword(s):  

The textbook brought to the attention of doctors is intended to give in a concise form an accurate and demonstrative presentation of the operational methods used in the gynecological department of the B-nntsy them. Mechnikov in Leningrad.


Author(s):  
Alessander Danna-dos-Santos ◽  
Maria M. Ribeiro dos Santos ◽  
Alessandra T. Magalhães ◽  
Vinicius S. Cardoso ◽  
Patricia Driusso ◽  
...  

Abstract Background Computerized stabilometry has been utilized to investigate the effect of vision on the neuromechanisms of human postural control. However, this approach lacks operational methods to quantify visual dependency during upright stance. This study had three goals: (1) To introduce the concept of visuo-postural dependency indices (VPDI) representing balance sway characteristics in multiple analytical domains (spatial, temporal, frequency, and structural), (2) To investigate the age and gender effects on VPDIs, and (3) To investigate the degree of relationships between VPDI and both subjective visual vertical and horizontal perception (SVV and SVH, respectively). Methods 102 participants (16 to 80 years old) performed bipedal stances on a force platform with eyes open and closed. Response variables included the VPDIs computed for each postural index. In addition, 29 participants also performed SVV and SVH assessments. Results Fifteen VPDIs showed to be robust indicators of visual input modulation, and the variation across their magnitudes of modulation revealed a non-homogeneous response to changes in visual stimuli. Gender and age were not found to be a significant factor to VPDI modulation. Conclusions VPDIs revealed to be potential measures capable to quantitatively assess visuo-postural dependency and aid the assessment of fall risks and balance impairments.


2021 ◽  
Vol 13 (24) ◽  
pp. 333-350
Author(s):  
Norbert Nowicki

Zagadnienia omawiane w niniejszym artykule dotyczą statusu normatywnego czynności operacyjno-rozpoznawczych w kontekście ustawy o Policji oraz kodeksu postępowania karnego. Podjęto próbę wskazania warunków, które rzutują na legalny charakter inwigilacji, a co za tym idzie – na skuteczne wykorzystanie materiału operacyjnego w procesie karnym. W tym celu scharakteryzowano niejawną aktywność Policji, wyszczególniając dopuszczalne metody operacyjne oraz definiując czynności operacyjno-rozpoznawcze w świetle literatury przedmiotu. Aby w pełni zobrazować problematykę poruszoną w artykule, przeanalizowano relację prawną między dowodem nielegalnym, o którym mowa w art. 168a kpk, a dowodem z czynności operacyjno-rozpoznawczych, na przykładzie zarządzonej kontroli operacyjnej. Praktyczny wymiar tych rozważań omówiono z punktu widzenia postępowania dowodowego, z uwzględnieniem ról i obowiązków procesowych prokuratora oraz sądu. Normative approach to operational and reconnaissance activities in terms of illegal evidence The issues discussed in this article refer to the normative status of operational and investigative activities in the context of the Police Act and the Code of Criminal Procedure. Namely, an attempt was made to demonstrate the conditions that affect the legal nature of surveillance, and thus the effective use of operational material in a criminal trial. For this purpose, the covert activity of the Police has been characterized by listing acceptable operational methods and defining operational and reconnaissance activities in the light of the literature on the subject. Therefore, in order to fully illustrate the issues discussed, an analysis was conducted of the legal relationship between the illegal evidence referred to in Art. 168a of the Code of Criminal Procedure and the evidence from operational and reconnaissance activities, on the example of an ordered operational control. The practical dimension of these considerations is discussed from the point of view of evidence proceedings, taking into account the procedural roles and responsibilities of the prosecutor and the court.


2021 ◽  
Vol 39 (2) ◽  
pp. 63-73
Author(s):  
Arman Aghili

In this work, the author will briefly discuss applications of the Fourier and Laplace transforms in the solution of certain singular integral equations and evaluation of integrals. By combining integral transforms and operational methods we get more powerful analytical tool for solving a wide class of linear or even non- linear fractional differential or fractional partial differential equation. Numerous examples and exercises occur throughout the paper.


Author(s):  
F. Gholami Golsefid ◽  
B. Daneshian ◽  
M. Rostamy-Malkhalifeh

Given that various operational methods can be considered for a system, applying changes to study the results and determine the best operational technique is costly and disrupts the system. Thus, to analyze and evaluate the outcomes of employing different operational methods, simulation is utilized. In this study, to improve the performance of a medical imaging center (MIC), first, this center was simulated and then, different scenarios were defined and simulated. Subsequently, using the simulation results and for evaluating the scenarios through Data Envelopment Analysis (DEA), each scenario was considered as a decision making unit (DMU). Since simulation results of each scenario are uncertain and differ for different iterations, a method was utilized capable of using the results of all iterations. On the other hand, indexes such as satisfaction, patient’s appropriate waiting, helpful servicing with the least number nurses and the maximum number services that have fuzzy nature, are important factors for MIC. Therefore, using the simulation results and considering the system manager’s idea, a method was proposed for determining the fuzzy values of these indexes. Next, a ranking model and an algorithm were proposed for determining a unique ranking and introducing the best scenario to improve the performance of MIC.


Vulcan ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 74-99
Author(s):  
Patrick Cecil

Abstract By the Second World War the US Navy had slated the pby Catalina to function as its long-range patrol seaplane and considered it for a bombing role. The first months of the war, however, revealed the pby to be too antiquated and slow to be a viable offensive weapon and thus minimized its utility. Relegated to conducting patrols and rescue operations, pby crews looked to the aircraft itself and experimented with technical and operational changes in reaction to fighting the Japanese in the South Pacific and the U-boat threat in the Atlantic. With the blessing of Navy’s command structure, crews made physical adjustments, added the latest technologies, incorporated supporting armaments, and designed new operational methods on an ad hoc basis for their respective circumstances and opponent. This experimentation and innovation resulted in the enhancement of the pby’s offensive utility as an attack weapon, and its transformation into the Black Cats and mad Cats.


Symmetry ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2051
Author(s):  
Nabiullah Khan ◽  
Mohd Aman ◽  
Talha Usman ◽  
Junesang Choi

A remarkably large of number of polynomials have been presented and studied. Among several important polynomials, Legendre polynomials, Gould-Hopper polynomials, and Sheffer polynomials have been intensively investigated. In this paper, we aim to incorporate the above-referred three polynomials to introduce the Legendre-Gould Hopper-based Sheffer polynomials by modifying the classical generating function of the Sheffer polynomials. In addition, we investigate diverse properties and formulas for these newly introduced polynomials.


2020 ◽  
Author(s):  
Alessander Danna-dos-Santos ◽  
Maria M Ribeiro dos Santos ◽  
Alessandra T Magalhaes ◽  
Vinicius S Cardoso ◽  
Patricia Driusso ◽  
...  

Abstract Background: Computerized stabilometry has been utilized to investigate the effect of vision on the neuromechanisms of human postural control. However, this approach lacks operational methods to quantify visual dependency during upright stance. Objectives: The study had three goals: (1) To introduce the concept of visuo-postural dependency indices (VPDI) representing balance sway characteristics in multiple analytical domains (spatial, temporal, frequency, and structural), (2) To investigate the age and gender effects on VPDIs, and (3) To investigate the degree of relationships between VPDI and both subjective visual vertical and horizontal perception (SVV and SVH, respectively). Methods: 102 participants (16 to 80 years old) performed bipedal stance on a force platform with eyes open and closed. Response variables included the VPDIs computed for each postural index. In addition, 29 participants also performed SVV and SVH assessments. Results: Fifteen VPDIs showed to be robust indicators of visual input modulation, and the variation across their magnitudes of modulation revealed a non-homogeneous response to changes in visual stimuli. Gender and age were not found to be a significant factor to VPDI modulation. Conclusions: VPDIs revealed to be potential measures capable to quantitatively assess visuo-postural dependency and aid the assessment of fall risks and balance impairments.


2020 ◽  
Vol 8 (3) ◽  
pp. 293-304
Author(s):  
Oleg V. Kozhevnikov ◽  
Inna V. Gribova ◽  
Svetlana E. Kralina

Background. Abducto-plano-valgus foot deformity is one of the most common diseases affecting children and teens. Recently, various methods of surgical treatment have been proposed for the same. However, despite the availability of various operational methods, there are several contradictions in the feasibility and success of a particular operation. Aim. To improve the technique of Evans Calcaneal osteotomy through the use of customized heel bone fixators. Materials and methods. A total of 30 patients (42 feet) aged 915 years with abducto-plano-valgus foot deformity were included. We undertook clinical examination, X-ray, computed tomography, and experimental researches. The surgical treatment consisted of Evans Calcaneal osteotomy, with the use of the standard method of fixation in group 1 (n = 33 feet) and the use of a customized fixator in group 2 (n = 9 feet). Results. The improved technique of Evans Calcaneal osteotomy using a special customized fixator allowed making the necessary correction in 100% of cases. The period of restoration of the heel bone integrity was reduced by an average of 30% (p 0.05). The period of restoration of the support became faster by almost 45% (p 0.05). Conclusion. The use of a special customized fixator for Evans Calcaneal osteotomy could significantly improve the outcomes and shorted the treatment time for children with abducto-plano-valgus foot deformity.


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