Results 61 to 70 of about 63,362 (250)

Uniaxial compressive strength prediction and ratio parameter optimization of titanium tailings composite backfill materials using intelligent hybrid models

Deep Underground Science and Engineering, EarlyView.
Based on the 90 datasets, ERT and four optimization algorithms were used to build four hybrid models to predict the UCS of the backfill body. The SMA‐ERT model was the most effective model, and it can reliably guide the design of the backfill ratio parameters. Abstract This study analyzed the feasibility of using titanium (Ti) tailings as a backfilling
Weijun Liu, Zida Liu, Zhixiang Liu
wiley   +1 more source

Distribution, social structure and habitat use of short-finned pilot whale, Globicephala macrorhynchus, in the Canary Islands [PDF]

, 2015
The Canary Archipelago is considered one of the planet’s biodiversity hotspots and the short-finned pilot whale is a key species in need of conservation measures.
Servidio, Antonella
core   +2 more sources

Explainable hybrid stacking ensemble method for hard rock pillar stability prediction and engineering applications

Deep Underground Science and Engineering, EarlyView.
This research proposes an interpretable hybrid stacking ensemble framework, optimized by the Sparrow Search Algorithm, to enhance hard rock pillar stability prediction. By integrating six machine learning models—k‐nearest neighbors, support vector machines, random forests, Gradient Boosting Decision Tree, eXtreme Gradient Boosting, and Light Gradient ...
Ning Wang, Guoyan Zhao, Meng Wang, Taraka Pattela   +3 more
wiley   +1 more source

Four decades of annual monitoring reveal declining reproductive success of a migratory baleen whale

Scientific Reports
Understanding and mitigating threats to species survival relies on the ability to track key demographic processes over time. Among these processes, reproduction stands out as a primary biological driver of population growth and resilience.
Els Vermeulen, Christopher Wilkinson, Peter B. Best, Ken Findlay   +3 more
doaj   +1 more source

Prediction of Large Whale Distributions: A Comparison of Presence–Absence and Presence-Only Modeling Techniques

Frontiers in Marine Science, 2018
Species distribution models that predict species occurrence or density by quantifying relationships with environmental variables are used for a variety of scientific investigations and management applications. For endangered species, such as large whales,
Paul C. Fiedler, Jessica V. Redfern, Karin A. Forney, Karin A. Forney, Daniel M. Palacios, Corey Sheredy, Kristin Rasmussen, Ignacio García-Godos, Luis Santillán, Luis Santillán, Michael J. Tetley, Fernando Félix, Lisa T. Ballance   +12 more
doaj   +1 more source

Ocean Governance and Marine Conservation: Institutional Work as a Lever for Ocean Sustainability

Environmental Policy and Governance, EarlyView.
ABSTRACT Ocean governance presents one of the most complex environmental policy challenges of our time, requiring coordinated action across multiple scales, sectors and stakeholder groups. This paper applies institutional work theory to systematically examine how actors create, maintain and disrupt the governance arrangements underpinning ocean ...
Kedar Uttam, Kristjan Jespersen, Paige Olmsted, Katryn Pasaribu   +3 more
wiley   +1 more source

Improved Power Tracking and Performance Evaluation Using a Tri‐Meta Hybrid DOA–CSA–WOA‐Based MPPT Controller for Standalone PV System

Energy Science &Engineering, EarlyView.
A Tri‐Meta Hybrid DOA–CSA–WOA Maximum Power Point Tracking controller is developed to enhance photovoltaic system performance. The proposed approach achieves higher tracking efficiency, faster convergence, and robust operation under dynamic irradiance and partial shading conditions.
Ali Abbas, Muhammad Farhan, Nouman Safdar, Muhammad Junaid Rabbani, Mohammad Rashed M. Altimania, Waleed Mohammed Abdelfattah, Hafiz Mudassir Munir   +6 more
wiley   +1 more source

Whale-watching experts’ questionnaire.

Each question from the whale watching operators’ questionnaire (Table 1) is referred to the corresponding identifier in the whale-watching operators’ questionnaire (ID). Questions whose results were shown to experts are indicated with an asterisk.
Chiara Scaini (691141), Alice Affatati (17695704), Anna Scaini (10176578)   +2 more
core   +2 more sources

An Investigation of the Relationship Between Central Bank Unconventional Monetary Policy and Bitcoin Activity

International Journal of Finance &Economics, EarlyView.
ABSTRACT This article investigates whether the unconventional monetary policy (UMP) measures pursued by the Federal Reserve, the Bank of England, the Bank of Japan, and the European Central Bank since the Global Financial Crisis (GFC) are associated with an appetite for cryptocurrency.
Niamh Wylie, Martha O'Hagan‐Luff
wiley   +1 more source

Effectiveness of immersive virtual reality‐based interventions for alleviating peri‐ and post‐procedural pain and anxiety in gynecologic settings: A systematic review and meta‐analysis of randomized controlled trials

International Journal of Gynecology &Obstetrics, EarlyView.
Abstract Background Non‐pharmacological and complementary therapeutic, notably immersive virtual reality‐based interventions (IVR), could alleviate pain and anxiety associated with gynecologic procedures. Objective To evaluate the effectiveness of IVR in reducing peri‐ and post‐procedural pain and anxiety in gynecologic procedures.
Cristina González‐Lara, Marina Piñar‐Lara, Esteban Obrero‐Gaitán, Héctor García‐López, Irene Cortés‐Pérez   +4 more
wiley   +1 more source