bluuebunny/crossref_metadata_2025_split huggingface dataset:
State-space optimal feedback control of optogenetically driven neural activity
Authors: Bolus M F , Willats A A , Rozell C J , Stanley G B 
Published: September 2020

Abstract

Objective. The rapid acceleration of tools for recording neuronal populations and targeted optogenetic manipulation has enabled real-time, feedback control of neuronal circuits in the brain. Continuously-graded control of measured neuronal activity poses a wide range of technical challenges, which we address through a combination of optogenetic stimulation and a state-space optimal control framework implemented in the thalamocortical circuit of the awake mouse. Approach. Closed-loop optogenetic control of neurons was performed in real-time via stimulation of channelrhodopsin-2 expressed in the somatosensory thalamus of the head-fixed mouse. A state-space linear dynamical system model structure was used to approximate the light-to-spiking input-output relationship in both single-neuron as well as multi-neuron scenarios when recording from multielectrode arrays. These models were utilized to design state feedback controller gains by way of linear quadratic optimal control and were also used online for estimation of state feedback, where a parameter-adaptive Kalman filter provided robustness to model-mismatch. Main results. This model-based control scheme proved effective for feedback control of single-neuron firing rate in the thalamus of awake animals. Notably, the graded optical actuation utilized here did not synchronize simultaneously recorded neurons, but heterogeneity across the neuronal population resulted in a varied response to stimulation. Simulated multi-output feedback control provided better control of a heterogeneous population and demonstrated how the approach generalizes beyond single-neuron applications. Significance. To our knowledge, this work represents the first experimental application of state space model-based feedback control for optogenetic stimulation. In combination with linear quadratic optimal control, the approaches laid out and tested here should generalize to future problems involving the control of highly complex neural circuits. More generally, feedback control of neuronal circuits opens the door to adaptively interacting with the dynamics underlying sensory, motor, and cognitive signaling, enabling a deeper understanding of circuit function and ultimately the control of function in the face of injury or disease.
Influence of Cosmic Radiation while Testing the Time Reversal Symmetry in the Decay of Ortho-Positronium Atoms using the J-PET detector
Authors: Raj J , Czerwiński E 
Published: September 2020

Abstract
This article reports the influence of cosmic radiation interaction while testing the T-symmetry in metastable triplet states of positronium with the Jagiellonian-Positron Emission Tomograph (J-PET) detector. The J-PET detector developed at Jagiellonian University in Krakow, Poland is one of its kind being based on organic scintillators. J-PET is an axially symmetric and high acceptance scanner that can be used as a multi-purpose detector system. It is well suited to pursue tests of discrete symmetries in decays of positronium in addition to medical imaging. Cosmic rays have been considered as a well known source of background while performing test measurements with the J-PET detector. It is important to estimate and reject the significant contribution of the cosmic ray interactions within the J-PET detector in order to improve the sensitivity while testing T-symmetry violation. Therefore, the results of cosmic radiation uniquely being separated due to their large energy deposits in plastic scintillator detectors are shown in this article.
Recent results from SUSY searches with ATLAS and prospects for the HL-LHC
Authors: Ventura A 
Published: September 2020

Abstract
Even if no experimental evidence has been found so far, TeV-scale supersymmetry is still one of the most popular extensions of the Standard Model. This work summarizes some of the most recent results on inclusive searches obtained with the ATLAS detector using about 80 fb−1 of data collected in 2015-2017 at a center-of-mass energy

s

=
13

TeV

. Also prospects on the HL-LHC discovery potential are presented assuming an integrated luminosity of 3000 fb−1 at

s

=
14

TeV

.
Tests of lepton flavour universality at LHCb
Authors: Buonaura A. 
Published: September 2020

Abstract
In the Standard Model the three charged leptons are identical copies of each other, apart from mass differences, and the electroweak coupling of the gauge bosons to leptons is expected to be independent of the flavour. This prediction is called lepton flavour universality (LFU) and is well tested in tree-level decays; any violation of LFU would be a clear sign of physics beyond the Standard Model. Experimental tests of LFU in semileptonic decays of b hadrons and in rare b decays are highly sensitive to models of New Physics in which new, heavy particles couple preferentially to the 2nd and 3rd generations of leptons. Recent results from LHCb on LFU in semileptonic

b
→
c
ℓ
v

transitions and rare

b
→
s
ℓ
ℓ

decays are discussed.
KLEVER: An experiment to measure

BR(KL→π0vv¯)

at the CERN SPS
Authors: van Dijk M W U 
Published: September 2020

Abstract
The KLEVER experiment aims to measure

BR

(

K
L

→

π
0

v

v
¯

)

, supplementing the ongoing NA62 measurement of

BR

(

K
+

→

π
+

v

v
¯

)

, to provide new input on CKM unitarity and potentially new physics. KLEVER is undergoing continuous development, with particular efforts focused on the design of the target and the beamline. As described here, adaptations are required relative to the K12 beamline in its current format, and a series of simulations has been performed to ensure that an adequate particle flux can be achieved while simultaneously suppressing problematic backgrounds.
Collider physics at the intensity and energy frontier – the HL-LHC and beyond
Authors: Meloni F 
Published: September 2020

Abstract
The LHC results have set the stage for the discussion of future high-energy physics facilities. The Higgs boson discovery, with the need of precise measurements of its properties, and the current absence of experimental evidence for new physics open a discussion on the best ways to move forward. This documents summarises recent sensitivity studies for the HL-LHC physics programme and compares them with the opportunities offered by possible future circular collider facilities. The physics potential is highlighted through observation of new particles, new phenomena and precision measurements of Standard Model quantities.
Decarbonizing US passenger vehicle transport under electrification and automation uncertainty has a travel budget
Authors: Alarfaj Abdullah F , Griffin W Michael , Samaras Constantine 
Published: September 2020

Abstract
The transportation sector is at the beginning of a transition represented by electrification, shared mobility, and automation, which could lead to either increases or decreases in total travel and energy use. Understanding the factors enabling deep decarbonization of the passenger vehicle sector is essential for planning the required infrastructure investments and technology adoption policies. We examine the requirements for meeting carbon reduction targets of 80% and higher for passenger vehicle transport in the United States (US) by midcentury under uncertainty. We model the changes needed in vehicle electrification, electricity carbon intensity, and travel demand. Since growth in fleet penetration of electric vehicles (EVs) is constrained by fleet stock turnover, we estimate the EV penetration rates needed to meet climate targets. We find for a base case level of passenger vehicle travel, midcentury deep decarbonization of US passenger transport is conditional on reducing the electricity generation carbon intensity to close to zero along with electrification of about 67% or 84% of vehicle travel to meet decarbonization targets of 80% or 90%, respectively. Higher electricity generation carbon intensity and degraded EV fuel economy due to automation would require higher levels of fleet electrification and/or further constrain the total vehicle travel allowable. Transportation deep decarbonization not only depends on electricity decarbonization, but also has a total travel budget, representing a maximum total vehicle travel threshold that still enables meeting a midcentury climate target. This makes encouraging ride sharing, reducing total vehicle travel, and increasing fuel economy in both human-driven and future automated vehicles increasingly important to deep decarbonization.
Social inequalities in flooding inside and outside of floodplains during Hurricane Harvey
Authors: Smiley Kevin T 
Published: September 2020

AbstractWhile previous research often finds flood impacts outside of conventional flood risk zones such as FEMA’s 100-year floodplain maps, we have less of a sense of the social and demographic composition of the areas outside of floodplains that experience these impacts, even though social inequalities in flood risk and impacts more broadly is well-documented in the United States. Using data on 100-year floodplains, flood impacts, socio-demographic characteristics, and residential parcels, this study focuses on race as a primary marker of socio-spatial inequality to examine flooding inside and outside of floodplains during Hurricane Harvey in Greater Houston. Descriptive findings show that a large majority of flooding occurred outside of 100-year floodplains. Regression models show that while there is limited evidence of racial inequalities in flood risk as conceptualized as location in 100-year floodplains, there are substantial racial inequalities in flood extent during Hurricane Harvey. Results further show that these overall racial inequalities in flood extent are primarily driven by impacts that occurred outside of 100-year floodplains. Conclusions center on how and why conventional delineations of flood risk can underestimate racial inequalities to natural hazards.
Quantitative Risk Assessment Onshore LNG Regasification Unit (ORU)
Authors: Aprilia P W , Artana K B , Baliwangi L 
Published: September 2020

Abstract
This paper presents the assessment of risk levels of the worker categories on the onshore LNG terminal regasification facility. Quantitative Risk Assessment are applied to evaluate the process and non-process accidental events at Onshore Regasification Unit (ORU) during offloading and normal operation. Individual Risk Per Annum (IRPA) and Potential Loss of Life (PLL) are the parameters to measure the risk for an individual in a specific worker category on the ORU area. Estimation numerical are provided to allow understanding of the risk exposure and fatality amongst the whole worker category or other areas of interest. QRA studies is used to take into account potential releases of hazardous material, estimated frequency of occurrence and consequences. Major Accident Hazard (MAH) are identified by the hazard identification process to identify all incident possibilities which cause to extensive damage to company assets and severe impact to people. Frequency of hazard occurrences is quantified using Event Tree Analysis (ETA) and fire modelling is utilized to represent the consequence. Evaluation against a set of risk acceptance criteria is carried out to the risk level arising from operation of the ORU area. Finally, a set of Safety Operation Procedure (SOP) and Emergency Response Plan (ERP) are developed to ensure the safety operation of the facility.
Prediction of Hydrodynamic Forces Acting on Wigley Hull based on SQCM
Authors: Ayub F A , Furukawa Y 
Published: September 2020

Abstract
Prediction of hydrodynamic forces acting on a ship hull is important to understand the manoeuvring performance of a ship at the initial design stage. To achieve the hydrodynamic forces, CFD calculations that directly solve the Navier-Stokes equation are often used recently, but they require much computational costs. Panel methods can also accurately represent the shape of a body and predict hydrodynamic forces acting on the body. SQCM (Source and Quasi Continuous Vortex Lattice Method) is one of panel methods which was developed at Kyushu University, and it has been confirmed that has a good accuracy to predict hydrodynamic force produced by a propeller. In this study, the SQCM is introduced to predict hydrodynamic forces acting on a Wigley hull in manoeuvring motion. In order to represent flow field around the Wigley hull appropriately, two kinds of free vortex models to be applied to predict hydrodynamic forces acting on the Wigley hull using the SQCM are examined. Predicted results are compared with model test results to verify the effectiveness of the free vortex models. The purpose of this study is to investigate the applicability of the SQCM to the prediction of hydrodynamic forces acting on a Wigley hull.
Study of Pioneer Sea Transportation’s Safety with Formal Safety Assessment Method
Authors: Priatno D H , Sunaryo  
Published: September 2020

Abstract
Particularly the safety of sea transportation must meet at least 2 decent criterias, namely seaworthiness and cargoworthiness. During the period 2009 - 2019 there were more than 90 accident cases have been recorded (NTSC, 2020). The types of accidents that occur are sinking (31%), aground (5%), collisions (30%), on fires (32%) and other types of accidents (5%). Ship accidents that occurred in Indonesia shows that the application of regulations relating to the security and safety of sea transportation still need to be given a greater portion in terms of their application and supervision. This research is focused on the study of the safety of pioneer ship with cargo-passanger ship types. Formal safety assessment (FSA) according to the International Maritime Organization standard is used as a method for this study, FSA was developed as a safety planning guide in the maritime field which aims to reduce risks in operations, while enhancing shipping safety, includes protection of life, health, the marine environment, and property. Research using expert judgment techniques with questionnaires. Risk analysis using Fault Tree Analysis method. Ship on fire and sinking are used as a top event. Calculation of minimum cut set on FTA is done using FTA software. In this study identified several risk control options that will be used in an effort to reduce the risk of ship on fire and sinking, by looking at the risk reduction index (ΔR), after which the cost of each Risk Control Option (RCO) is calculated to get the Gross of cost averting effectiveness index fatality (GCAF) and Net of cost averting fatality (NCAF) in order to know whether the RCO option has provided benefits in terms of benefits and costs incurred. Recommendations are submitted by looking at the most optimal cost and benefit options.
Quantitative Risk Assessment of LNG Terminal
Authors: Budiarta K G W , Handani D W , Dinariyana A A B 
Published: September 2020

Abstract
According to the report of Agency for the Assessment and Application of Technology of Indonesia in 2019, it is stated that the demand for natural gas in Indonesia is predicted to increase from 1,516 Billions Standard Cubic Feet (BSCF) in 2017 to 4,723. BSCF or increase by an average of 3.5% per year in 2050. The most effective way in distributing natural gas nowadays is in the form of LNG. A national gas company together with a port company planned to build an LNG Terminal in a port area of Semarang, Central Java. This terminal will occupy the area based on the ultimate plan of the port which allocates the land expansion area of ± 5,200 m2 as liquid bulk area. The existing terminal is already being used as fuel storage for Methanol and High Speed Diesel (HSD). The designed LNG Terminal facilities consist of storage tanks with a capacity of 10,000 m3, LNG marine loading arm, filling stations, and equipped with jetty that capable to serve 22,000 m3 LNG vessel with length up to 160m. This paper addresses on the assessment of risk that may occur on the designed LNG Terminal. The risk assessment is carried out in several stages, beginning with identifying hazards using Hazard and Operability (HAZOP) followed by analysing the frequency of hazard using Fault Tree Analysis (FTA) and Event Tree Analysis (ETA) methods to find out the type potential hazards and its frequency. The next stage is the analysis of the consequences using fire modelling method is carried out. The level of risk is represented by mapping the result of frequency and the consequence analysis into f-N Curve according to UK-HSE. Mitigation by means of Layers of Protection Analysis (LOPA) is carried out if the risk is laid in unacceptable region.
Development of Risk Based Business Continuity Plan Using House of Risk Method on Container Terminal
Authors: Akbari D R , Gurning R O S 
Published: September 2020

Abstract
Business processes on every organization is essential to be maintained sustainably. Business disruption in certain area by large scale disaster weakens community resilience through halting productivity as experienced recently, and could also further impact national, regional and the global economy. Most of organizations have not realized that business continuity plan (BCP) is essential to their business continuity. This study aims to analyze the disruptions that might happen on container terminal and rank which disruption contributes most to the loss. This study also try to explain how business continuity plan can minimize the loss caused. The case study in this research is a container terminal. To be able to maintain business continuity in an organization, the terminal should implement business continuity planning in order to identify the risks of a disaster then provide procedures and strategies to reduce or minimize the risk. The development focused on the company’s ability to identify disruptions that might disrupt the business process and also to take action as. The research will be carried out using House of Risk method. Development & integration of the actual BCP will be conducted based on international standard ISO 22301:2012. The ranking of each identified risk agents and also the biggest contributor of the Aggregate Risk Potential will be the main output of this research.
Risk Assessment of Subsea Pipeline due to Installation and Operation of Single Point Mooring (SPM)
Authors: Aldara D R , Artana K B , Ariana I M 
Published: September 2020

Abstract
Offshore exploration facilities located in remote areas require high investment and high operational cost, the assets are classified as vital assets for the companies. The careful study and examination is therefore required to ensure that the risk of the facility is acceptable. Offshore exploration used subsea pipelines that has several risks if the accident occurs. Based on historical data, most of subsea pipelines failures are caused by third party factors (dropped anchor, dragged anchor, and ship sinking). This paper examines risk assessment of subsea pipelines due to installation and operation of SPM is assessed used DNVGL RP F107 standard and numerical simulations. Frequency is assessed by using Bayesian Network methods. Whereas the consequences were assessed by using calculations on the DNVGL RP F107 standard and FEM simulation. The results of frequency and consequences are mapped within a risk matrix according to DNVGL RP F107. Based on the calculation, the frequency of all types of vessels is less than 10-5 (rank 1). While the lowest consequence was rank 3 with a dent/diameter is 12.32% and the highest was rank 5 (>20%) which can damage the subsea pipelines. The risk matrix shows that the risk level are in acceptable and ALARP condition. Acceptable obtained by frequency in rank 1 and the consequence in rank 3 and 4. While ALARP obtained by frequence rank 1 and consequence rank 5. Although it is not mandatory for mitigation, it is recommended to provide the subsea pipeline with external protection. Rock dumping is recommended as external protection for subsea pipelines due to the good ability to protect the subsea pipelines and it has lower cost compared to concrete mattress.
Structural Degradation of Oil Tanker Operating in Indonesian Waterways
Authors: Komariyah S , Prasetyo F A , Garjati V N , Hariadi M R F , Prakasa A R 
Published: September 2020

Abstract
Corrosion is one of the significant factors for decreasing strength in floating marine structures. In general, rules of classification society use the North Atlantic Ocean located in the sub-tropical region as a reference area in the formulation of the structural strength. If the sub-tropical area compare with tropical region such as Indonesia waterway, Indonesia waterway has high salinity and humidity. This makes marine environment in Indonesia more corrosive. One example of the effects of corrosion is the reduction in plate thickness. This leads to decrease in ship strength. Using measured thickness data collected from 25-thickness measurement reports from 24 Oil Tankers that sailing in Indonesian waterways, the diminution of ship structural thickness has been analysed. The age of Oil Tankers, whose data was taken, ranges from 5 to 23 years. Data analysis was carried out by using statistical approach based on Weibull distribution. Using 95% cumulative probability, it was found that the thickness diminution of Oil Tanker with design life of 20 years is 2,07 mm for deck plate, the side plate is 2,06 mm, the bottom plate is 1,81 mm and the inner bottom plate is 1,53 mm.
The Wave Making Resistance Evaluation of The Fishing Ship With Skeg Using Tent Function Method
Authors: Sulisetyono A 
Published: September 2020

Abstract
The numerical computation method to explore the wave-making resistance for a case of the small ship with skeg in calm water’s surface condition is described. The problem is solved using the theory of Thin ship since it suitable for a case of slenderness of ship’s hull. The distribution of source along the hull’s centre plane is written in the Green function which is a form of Havelock source in ideal flow beneath free surfaces. In numerical computation, the approach of Tent function is proposed to discretize the form of the ship’s hull developed from the data offset for solving the Michell integral problem. Employing the numerical methods developed, the wave resistance prediction for the case of the Wigley hull and the traditional fishing ship ‘Madura’ in Indonesia are conducted within several of Froude numbers. Numerical results show an effect of the hull’s skeg on the ship’s resistance due to wave after body significantly.