scholarly journals Optimizing the Key Variables to Generate Host Sensitized Lanthanide Doped Semiconductor Nanoparticle Luminophores

2020 ◽  
Vol 124 (49) ◽  
pp. 26495-26517 ◽  
Author(s):  
Gouranga H. Debnath ◽  
Prasun Mukherjee ◽  
David H. Waldeck
Keyword(s):  
Semiconductor Nanoparticle ◽  
Key Variables

Referral Patterns for Youths Identified at Risk for Suicide by Trained Gatekeepers

Crisis ◽  
2012 ◽  
Vol 33 (2) ◽  
pp. 113-119 ◽  
Author(s):  
Michael S. Rodi ◽  
Lucas Godoy Garraza ◽  
Christine Walrath ◽  
Robert L. Stephens ◽  
D. Susanne Condron ◽  
...  
Keyword(s):  
Suicide Prevention ◽  
Demographic Characteristics ◽  
Service Access ◽  
Referral Patterns ◽  
Race And Gender ◽  
Lee Smith ◽  
Prevention Behavior ◽  
Key Variables ◽  
And Gender ◽  
To Receive

Background: In order to better understand the posttraining suicide prevention behavior of gatekeeper trainees, the present article examines the referral and service receipt patterns among gatekeeper-identified youths. Methods: Data for this study were drawn from 26 Garrett Lee Smith grantees funded between October 2005 and October 2009 who submitted data about the number, characteristics, and service access of identified youths. Results: The demographic characteristics of identified youths are not related to referral type or receipt. Furthermore, referral setting does not seem to be predictive of the type of referral. Demographic as well as other (nonrisk) characteristics of the youths are not key variables in determining identification or service receipt. Limitations: These data are not necessarily representative of all youths identified by gatekeepers represented in the dataset. The prevalence of risk among all members of the communities from which these data are drawn is unknown. Furthermore, these data likely disproportionately represent gatekeepers associated with systems that effectively track gatekeepers and youths. Conclusions: Gatekeepers appear to be identifying youth across settings, and those youths are being referred for services without regard for race and gender or the settings in which they are identified. Furthermore, youths that may be at highest risk may be more likely to receive those services.

Faculty selection of textbooks: Key variables and the role of teaching experience

2010 ◽  
Author(s):  
Aja Taitano ◽  
Bradley Smith ◽  
Cade Hulbert ◽  
Kristin Batten ◽  
Lalania Woodstrom ◽  
...  
Keyword(s):  
Teaching Experience ◽  
Key Variables ◽  
Faculty Selection ◽  
Selection Of

Computer simulation to evaluate the economics of landfill gas recovery

1998 ◽  
Vol 38 (2) ◽  
pp. 201-208
Author(s):  
M. W. Milke
Keyword(s):  
Computer Simulation ◽  
Computer Program ◽  
Landfill Gas ◽  
Base Case ◽  
Simulation Tool ◽  
Hypothetical Case ◽  
Gas Recovery ◽  
Fixed Set ◽  
Key Variables ◽  
Simulation Results

A need exists for tools to improve evaluations of the economics of landfill gas recovery. A computer simulation tool is presented. It uses a spreadsheet computer program to calculate the economics for a fixed set of inputs, and a simulation program to consider variations in the inputs. The method calculates the methane generated each year, and estimates the costs and incomes associated with the recovery and sale of the gas. Base case results are presented for a city of 500,000. An uncertainty analysis for a hypothetical case is presented. The simulation results can help an analyst see the key variables affecting the economics of a project.

Ethical leadership and its role in organizational integrity to reduce the nutrients of administrative corruption

2017 ◽  
Vol 3 (2) ◽  
pp. 272
Author(s):  
Yousef Hajim Al-Taie ◽  
Darwn Faraidun Abdulla ◽  
Wrya Najm Rasheed
Keyword(s):  
Decision Making ◽  
Ethical Leadership ◽  
Multiple Control ◽  
Negative Behaviors ◽  
Appropriate Behavior ◽  
Positive Side ◽  
Organizational Integrity ◽  
Key Variables ◽  
Independent Variable ◽  
Lack Of Commitment

The ethical  leadership is considered as one of the most  vital  practices , leadership styles and as an aspects of appropriate behavior to build organizational social relationships between the human capital in organization and its outside , and characterized their relationship by two-way , between the superior and subordinate from one way and  between them and the society on the other hand, in order to focus on strengthen relations processes and the appropriate decision making  in accordance with the behaviors of ethical  leadership Which focuses in its philosophy on credibility, trust and justice in the distribution of decision-making among individuals, and the most important thing that  individuals need is to encourage ethical values that limit the behavior of perverse action or negative behavior, and whenever  the leadership does ethically, they may  led to achieve organizational integrity, which emphasizes its philosophy to avoid negative behaviors or illegal and adhere by the behavior rules and ethical discipline  that would limit from the behavior of deviant corruption or rooted in the organizations. Organizational integrity it deliberated as the most significant aspects of the development of organizations in the third millennium, which focuses socially on the forces of work and highlight the positive side of the Organization activities and educating and training of individuals on such those kind of actions, taking into consideration its impact on the external environment and adherence to ethical standards and principles that they have a mental acceptance. Therefore, it can be said that through ethical leadership and organizational integrity, organizations can reduce the spread of administrative corruption and eliminate its nutrients and incubators by fostering a culture of ethical leadership and working with the principles of organizational integrity within the wholly organization. Hence, the current study focused on the three key variables.  The independent variable is the ethical leadership, according to the model of (Sajefert et al..2016), with its dimension which includes (Justice, ethical principles, orientation towards individuals, separation between authorities, classification and anxiety bearing), while the mediator variable is the organizational integrity which were applied based on the model of (Moon & Hamition: 2013), which its sub-dimensions consists of  (critical task, supervision, focus on the process, focus on efficiency, human resource, trust, learning and improvement, change management). However,  the dependent variable of our study is nutrients of administrative corruption including  the dimensions, which have been obtained from the preliminary study of a number of experts and academics, as identified as more than twenty dimensions and  then the following dimensions, which have been got the agreement between most of the experts, are  (mortal routine, job Infiltration during work, career lazing, partisan interest, multiple control points, lack Importance in specialization, carelessness, lack of commitment, lack of knowledge of the profession ethics, Competencies and incompetence Conflict, the lack of strict laws and regulations, linking salary to productivity). Questionnaires were designed and which have been pre-tested for data collection and measurements were developed using a random sampling method. The questionnaires were distributed for the sample of 70 employees in three important departments in Najaf Governorate (Tax Department, State Real Estate Department and Registration Department) to be a part of the current study. Numerical statistical methods were applied, including mean, standard deviation, percent weight, C.V, and simple and multiple linear regressions using SMART PLS program. The results showed a positive correlation among the three variables in varying proportions. Based on the results of the current study, a number of recommendations were suggested to strengthen the importance of ethical leadership in achieving organizational integrity as well as to reduce the spread of administrative corruption and eliminate its nutrients and incubators in other organizations.

scholarly journals The flow reactor system for in-line synthesis of semiconductor nanoparticle

2015 ◽  
Vol 643 ◽  
pp. 012016 ◽  
Author(s):  
O A Ryzhov ◽  
L B Matyushkin
Keyword(s):  
Flow Reactor ◽  
Reactor System ◽  
Semiconductor Nanoparticle

scholarly journals Landscape Design toward Urban Resilience: Bridging Science and Physical Design Coupling Sociohydrological Modeling and Design Process

2021 ◽  
Vol 13 (9) ◽  
pp. 4666
Author(s):  
Yoonshin Kwak ◽  
Brian Deal ◽  
Grant Mosey
Keyword(s):  
Pilot Study ◽  
Landscape Design ◽  
Urban Systems ◽  
Urban Resilience ◽  
Planning Support Systems ◽  
Creative Solutions ◽  
Resilient Communities ◽  
Study Support ◽  
Key Variables ◽  
Resilient Design

Given that evolving urban systems require ever more sophisticated and creative solutions to deal with uncertainty, designing for resilience in contemporary landscape architecture represents a cross-disciplinary endeavor. While there is a breadth of research on landscape resilience within the academy, the findings of this research are seldom making their way into physical practice. There are existent gaps between the objective, scientific method of scientists and the more intuitive qualitative language of designers and practitioners. The purpose of this paper is to help bridge these gaps and ultimately support an endemic process for more resilient landscape design creation. This paper proposes a framework that integrates analytic research (i.e., modeling and examination) and design creation (i.e., place-making) using processes that incorporate feedback to help adaptively achieve resilient design solutions. Concepts of Geodesign and Planning Support Systems (PSSs) are adapted as part of the framework to emphasize the importance of modeling, assessment, and quantification as part of processes for generating information useful to designers. This paper tests the suggested framework by conducting a pilot study using a coupled sociohydrological model. The relationships between runoff and associated design factors are examined. Questions on how analytic outcomes can be translated into information for landscape design are addressed along with some ideas on how key variables in the model can be translated into useful design information. The framework and pilot study support the notion that the creation of resilient communities would be greatly enhanced by having a navigable bridge between science and practice.

scholarly journals Box-Behnken Assisted Validation and Optimization of an RP-HPLC Method for Simultaneous Determination of Domperidone and Lansoprazole

Separations ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 5
Author(s):  
Mohd Afzal ◽  
Mohd. Muddassir ◽  
Abdullah Alarifi ◽  
Mohammed Tahir Ansari
Keyword(s):  
Flow Rate ◽  
Mobile Phase ◽  
Limit Of Detection ◽  
Hplc Method ◽  
Box Behnken Design ◽  
Rp Hplc ◽  
System Suitability ◽  
Method Optimization ◽  
Key Variables

A highly specific, accurate, and simple RP-HPLC technique was developed for the real-time quantification of domperidone (DOMP) and lansoprazole (LANS) in commercial formulations. Chromatographic studies were performed using a Luna C8(2), 5 μm, 100Å, column (250 × 4.6 mm, Phenomenex) with a mobile phase composed of acetonitrile/2 mM ammonium acetate (51:49 v/v), pH 6.7. The flow rate was 1 mL·min−1 with UV detection at 289 nm. Linearity was observed within the range of 4–36 µg·mL−1 for domperidone and 2–18 µg·mL−1 for lansoprazole. Method optimization was achieved using Box-Behnken design software, in which three key variables were examined, namely, the flow rate (A), the composition of the mobile phase (B), and the pH (C). The retention time (Y1 and Y3) and the peak area (Y2 and Y4) were taken as the response parameters. We observed that slight alterations in the mobile phase and the flow rate influenced the outcome, whereas the pH exerted no effect. Method validation featured various ICH parameters including linearity, limit of detection (LOD), accuracy, precision, ruggedness, robustness, stability, and system suitability. This method is potentially useful for the analysis of commercial formulations and laboratory preparations.

scholarly journals Formation of supermassive black hole seeds in nuclear star clusters via gas accretion and runaway collisions

2021 ◽  
Author(s):  
Arpan Das ◽  
Dominik R G Schleicher ◽  
Nathan W C Leigh ◽  
Tjarda C N Boekholt
Keyword(s):  
Black Holes ◽  
Initial Conditions ◽  
High Redshift ◽  
Star Clusters ◽  
Gas Reservoir ◽  
Highly Sensitive ◽  
Stellar Collisions ◽  
Key Variables ◽  
Chaotic Nature ◽  
Gas Accretion

Abstract More than two hundred supermassive black holes (SMBHs) of masses ≳ 109 M⊙ have been discovered at z ≳ 6. One promising pathway for the formation of SMBHs is through the collapse of supermassive stars (SMSs) with masses ∼103 − 5 M⊙ into seed black holes which could grow upto few times 109 M⊙ SMBHs observed at z ∼ 7. In this paper, we explore how SMSs with masses ∼103 − 5 M⊙ could be formed via gas accretion and runaway stellar collisions in high-redshift, metal-poor nuclear star clusters (NSCs) using idealised N-body simulations. We explore physically motivated accretion scenarios, e.g. Bondi-Hoyle-Lyttleton accretion and Eddington accretion, as well as simplified scenarios such as constant accretions. While gas is present, the accretion timescale remains considerably shorter than the timescale for collisions with the most massive object (MMO). However, overall the timescale for collisions between any two stars in the cluster can become comparable or shorter than the accretion timescale, hence collisions still play a crucial role in determining the final mass of the SMSs. We find that the problem is highly sensitive to the initial conditions and our assumed recipe for the accretion, due to the highly chaotic nature of the problem. The key variables that determine the mass growth mechanism are the mass of the MMO and the gas reservoir that is available for the accretion. Depending on different conditions, SMSs of masses ∼103 − 5 M⊙ can form for all three accretion scenarios considered in this work.

scholarly journals New Equation for Predicting Pipe Friction Coefficients Using the Statistical Based Entropy Concepts

Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 611
Author(s):  
Yeon-Woong Choe ◽  
Sang-Bo Sim ◽  
Yeon-Moon Choo
Keyword(s):  
Friction Coefficient ◽  
Accurate Determination ◽  
Mean Velocity ◽  
Friction Coefficients ◽  
Flow Discharge ◽  
Comparison Results ◽  
Flow Loss ◽  
Key Variables ◽  
New Equation

In general, this new equation is significant for designing and operating a pipeline to predict flow discharge. In order to predict the flow discharge, accurate determination of the flow loss due to pipe friction is very important. However, existing pipe friction coefficient equations have difficulties in obtaining key variables or those only applicable to pipes with specific conditions. Thus, this study develops a new equation for predicting pipe friction coefficients using statistically based entropy concepts, which are currently being used in various fields. The parameters in the proposed equation can be easily obtained and are easy to estimate. Existing formulas for calculating pipe friction coefficient requires the friction head loss and Reynolds number. Unlike existing formulas, the proposed equation only requires pipe specifications, entropy value and average velocity. The developed equation can predict the friction coefficient by using the well-known entropy, the mean velocity and the pipe specifications. The comparison results with the Nikuradse’s experimental data show that the R2 and RMSE values were 0.998 and 0.000366 in smooth pipe, and 0.979 to 0.994 or 0.000399 to 0.000436 in rough pipe, and the discrepancy ratio analysis results show that the accuracy of both results in smooth and rough pipes is very close to zero. The proposed equation will enable the easier estimation of flow rates.

Cu–Sb–S Ternary Semiconductor Nanoparticle Plasmonics

Nano Letters ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2610-2617
Author(s):  
Guoning Liu ◽  
Shaopeng Qi ◽  
Jinxi Chen ◽  
Yongbing Lou ◽  
Yixin Zhao ◽  
...  
Keyword(s):  
Semiconductor Nanoparticle ◽  
Ternary Semiconductor
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