On the determination of the number of factors using information criteria with data-driven penalty

2015 ◽  
Vol 58 (1) ◽  
pp. 161-184 ◽  
Author(s):  
Joakim Westerlund ◽  
Sagarika Mishra
Keyword(s):  
Information Criteria ◽  
Data Driven ◽  
Number Of Factors

The Ship Domain – A Criterion of Navigational Safety Assessment in an Open Sea Area

2008 ◽  
Vol 62 (1) ◽  
pp. 93-108 ◽  
Author(s):  
Zbigniew Pietrzykowski ◽  
Janusz Uriasz
Keyword(s):  
Artificial Intelligence ◽  
Safety Assessment ◽  
Research Results ◽  
Safe Navigation ◽  
Number Of Factors ◽  
Open Sea ◽  
Sea Area ◽  
Point Of Departure ◽  
Shape And Size

One of the basic tasks in shipping is to ensure safe navigation of vessels. The concept of the ship domain is of major importance in the assessment of a navigational situation and the avoidance of ship collisions. It is difficult to determine a ship domain as its shape and size depend on a number of factors. One question to be answered before the determination of the ship domain is which method to use: statistical, analytic, or expert method using artificial intelligence tools; other questions are connected with domain interpretation. The authors have analyzed the ship domain as a criterion for the assessment of ship navigational safety in an encounter situation in the open sea. The research results are used to answer some of the questions.Part 2 includes definitions of the ship domain and ship fuzzy domain. Part 3, in turn, presents methods of their determination as well as relevant questions. The results of the authors' research, described in Part 4, make up a basis for the determination of the domain and ship fuzzy domain. These have been determined with the so-called dynamic domains as a point of departure. The criteria of ship domain and closest point of approach are compared and discussed. Encounters of various size ships are considered in Part 5. The research and its results are described. Both ship domains and ship fuzzy domains of encountering ships are analyzed. Then, conclusions have been formulated in relation to the effect of the sizes of encountering ships on the shapes and sizes of their domains. Final conclusions are given in Part 6.

scholarly journals DETERMINATION OF ADOLESCENT WORLDVIEW: COMBATING NEGATIVE INFLUENCE OF SOCIAL MEDIA

2017 ◽  
Vol 2 (1) ◽  
pp. 6
Author(s):  
Rose Emmaria Tarigan
Keyword(s):  
Social Media ◽  
Positive Impact ◽  
Case Study Research ◽  
Negative Influence ◽  
Number Of Factors ◽  
Depth Interview ◽  
Negative Impacts ◽  
Use Of Social Media

Use of social media creates positive or negative impacts on adolescents. There are a number of factors enabling adolescents to make use of social media positively. One of the factors studied in this research is the adolescent worldview. The adolescent worldview greatly determines the way she behaves and her attitude towards social media. The result of this research shows that adolescent worldview may release and enables her to reject negative impacts of social media, particularly from modern cultural -isms as relativism, individualism, emotionalism, presentism (present-time ism), materialism, autonomy, victimism, and turn it into a positive impact on herself. Worldviews may be differentiated based on three categories namely religion, spirituality and secularity. This research is conducted by explorative-qualitative approach, using case study research method. Data collection was conducted by in-depth interview with late adolescents.

Data-driven modeling for determination of asphaltene stability condition in oil system

2018 ◽  
Vol 36 (11) ◽  
pp. 726-731
Author(s):  
Arash Kamari ◽  
Amir H. Mohammadi ◽  
Deresh Ramjugernath
Keyword(s):  
Stability Condition ◽  
Data Driven ◽  
Data Driven Modeling

scholarly journals Determination of Varying Group Sizes for Pooling Procedure

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Wenjun Xiong ◽  
Hongyu Lu ◽  
Juan Ding
Keyword(s):  
Group Size ◽  
Rare Diseases ◽  
Population Heterogeneity ◽  
Sequential Procedure ◽  
Data Driven ◽  
Equal Group ◽  
Essential Step ◽  
Available Information ◽  
Individual Information

Pooling is an attractive strategy in screening infected specimens, especially for rare diseases. An essential step of performing the pooled test is to determine the group size. Sometimes, equal group size is not appropriate due to population heterogeneity. In this case, varying group sizes are preferred and could be determined while individual information is available. In this study, we propose a sequential procedure to determine varying group sizes through fully utilizing available information. This procedure is data driven. Simulations show that it has good performance in estimating parameters.

scholarly journals Computational modelling of the inflammatory response in trauma, sepsis and wound healing: implications for modelling resilience

2014 ◽  
Vol 4 (5) ◽  
pp. 20140004 ◽  
Author(s):  
Yoram Vodovotz
Keyword(s):  
Inflammatory Response ◽  
Acute Inflammation ◽  
Computational Modelling ◽  
Data Driven ◽  
Patient Specific ◽  
Cell Tissue ◽  
Organ Systems ◽  
Forward Process

Resilience refers to the ability to recover from illness or adversity. At the cell, tissue, organ and whole-organism levels, the response to perturbations such as infections and injury involves the acute inflammatory response, which in turn is connected to and controlled by changes in physiology across all organ systems. When coordinated properly, inflammation can lead to the clearance of infection and healing of damaged tissues. However, when either overly or insufficiently robust, inflammation can drive further cell stress, tissue damage, organ dysfunction and death through a feed-forward process of inflammation → damage → inflammation. To address this complexity, we have obtained extensive datasets regarding the dynamics of inflammation in cells, animals and patients, and created data-driven and mechanistic computational simulations of inflammation and its recursive effects on tissue, organ and whole-organism (patho)physiology. Through this approach, we have discerned key regulatory mechanisms, recapitulated in silico key features of clinical trials for acute inflammation and captured diverse, patient-specific outcomes. These insights may allow for the determination of individual-specific tolerances to illness and adversity, thereby defining the role of inflammation in resilience.

scholarly journals Assessment of groundwater vulnerability to pollution using the Kherici’s method in the Talezza plain, Collo region (NE Algeria)

2017 ◽  
Vol 33 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Badra Attoui ◽  
Samia T. Benrabah ◽  
Habiba Majour ◽  
Nadjet Zair
Keyword(s):  
Groundwater Pollution ◽  
Soil Surface ◽  
Groundwater Vulnerability ◽  
Anthropogenic Factors ◽  
Natural Factors ◽  
Groundwater Aquifers ◽  
Number Of Factors ◽  
Impacting Factors ◽  
Parametric Systems

Abstract The intrinsic vulnerability of groundwater aquifers refers to their sensitivity to all contamination coming from soil surface irrespective of the nature of the polluting. In order to improve the protection of groundwater, there must be a reduction in the infiltration of contaminants towards the reservoir through the impacting factors determination of this phenomenon by means of research. There are collected models that include particular number of factors which allow the determination of a sign of groundwater vulnerability of all superficial pollutions. The goal of the study centers on ascertaining the state of vulnerability and the risk of groundwater pollution of the Collo region with a new proposed method by Kherici. Generally, assessment methods of vulnerability and the danger of groundwater pollution employ parametric systems with numerical quotation, cartographic superposition where the analytical methods are based on equations. In this study, we consider the combination of criteria dependent on natural factors (thickness of the unsaturated zone, geologic facies, degree of auto-purification) and the causes of groundwater vulnerability to man-made pollution (anthropogenic factors).

scholarly journals EVALUASI PENGARUH FUNGSI PEMETAAN TERHADAP KINERJA DAN KONSUMSI DAYA CACHE MEMORY

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Tati Erlina ◽  
Rahmi Eka Putri
Keyword(s):  
Power Consumption ◽  
Computer Architecture ◽  
High Performance ◽  
Cache Memory ◽  
Design Elements ◽  
Mapping Functions ◽  
Number Of Factors ◽  
Mapping Techniques ◽  
High Performance Computers

Menciptakan komputer yang berkinerja tinggi dan mengkonsumsi daya minimal merupakan salah satu fokus yang menjadi tren penelitian dalam bidang arsitektur komputer belakangan ini. Diketahui bahwa sejumlah faktor berpengaruh dalam menentukan kinerja dan konsumsi daya dari setiap elemen pembangun komputer dan pada akhirnya mempengaruhi kinerja dan konsumsi daya sebuah komputer secara keseluruhan. Fokus penelitian ini adalah untuk mengetahui seberapa besar pengaruh dari fungsi pemetaan (mapping techniques) sebagai salah satu jenis elemen perancangan yang diterapkan pada sebuah cache memory terhadap kinerja dan konsumsi daya dari cache memory dengan mensimulasikannya pada SMPCache dengan berbagai macam benchmark dan CACTI.[En]Creating high performance computers which consume minimal power is one of the focus and has become the trend of research in the field of computer architecture lately. It has been known that a number of factors influence the determination of the performance and power consumption of each of the building elements of the computer and ultimately affect the performance and overall power consumption of a computer. The focus of this research is to find out how much mapping functions as one of the type of design elements applied to a cache memory influence the performance and power consumption of the cache memory by simulating various configuration elements of the design in SMPCache with various benchmarks and CACTI.

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