A Review of Automatic Classification of Drones Using Radar: Key Considerations, Performance Evaluation and Prospects

Automatic target classification or recognition is a critical capability in noncooperative surveillance with radar in several defence and civilian applications. It is a well-established research field and numerous techniques exist for recognizing targets, including miniature unmanned air systems or drones (i.e., small, mini, micro, and nano...

Delft: Views on Delft

Around 1661, Johannes Vermeer painted what has become one of the most famous city views: the View of Delft. The city of Delft is depicted from across the water of the River Schie. We see the city as a collection of brick buildings with lower and higher towers, peaking into the sky, and being reflected in the water of the river. The light looks...

Skopje Brutalism Trail: Rebuilding Social Fabric through Architecture and Performance

The article reflects the city of Skopje from the perspective of the workshop Skopje Brutalist Trail held in late September 2022 as a part of the activities focused on fieldwork within the COST Action Writing Urban Places. The workshop departs from the general topics of brutalist architecture and solidarity, both highly relevant and related to...

The Intimate City: Skopje

A city is not a single entity. It is a vast collection of intimate narratives, crisscrossing and connecting in an ever-changing tapestry of movement and activity. Supporting this colourful and complex ecosystem in the most effective way is an ongoing challenge for governments, planners and architects.<br/><br/>An approach which can be seen in...

Drag-reducing riblets with fouling-release properties: development and testing

The manufacture and preliminary testing of a drag-reducing riblet texture with fouling-control properties is presented. The commercial fouling-release product Intersleek® 1100SR was modified to manufacture riblet-textured coatings with an embossing technology. Hydrodynamic drag measurements in a Taylor–Couette set-up showed that the modified...

The role of bioenergy in a climate-changing world

Bioenergy has been under intense scrutiny over the last ten years with significant research efforts in many countries taking place to define and measure sustainable practices. We describe here the main challenges and policy issues and provide policy recommendations for scaling up sustainable bioenergy approaches globally. The 2016 Intended...

The Origins of [C II] Emission in Local Star-forming Galaxies

The [C ii] 158 μm fine-structure line is the brightest emission line observed in local star-forming galaxies. As a major coolant of the gas-phase interstellar medium, [C ii] balances the heating, including that due to far-ultraviolet photons, which heat the gas via the photoelectric effect. However, the origin of [C ii] emission remains...

The Origin of [CII] 157 μm Emission in a Five-component Interstellar Medium: The Case of NGC 3184 and NGC 628

With its relatively low ionization potential, C⁺ can be found throughout the interstellar medium (ISM) and provides one of the main cooling channels of the ISM via the [C ii] 157 μm emission. While the strength of the [C ii] line correlates with the star formation rate, the contributions of the various gas phases to the [C ii]...

Reconciling food security and bioenergy: Priorities for action

Understanding the complex interactions among food security, bioenergy sustainability, and resource management requires a focus on specific contextual problems and opportunities. The United Nations' 2030 Sustainable Development Goals place a high priority on food and energy security; bioenergy plays an important role in achieving both goals....

The spatially resolved [C II] Cooling line deficit in galaxies

We present [C ii] 158 μm measurements from over 15,000 resolved regions within 54 nearby galaxies of the Kingfish program to investigate the so-called [C ii] "line-cooling deficit" long known to occur in galaxies with different luminosities. The [C ii]/TIR ratio ranges from above 1% to below 0.1% in the sample, with a mean value of 0.48 ± 0...