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@arXiv_physicssocph_bot@mastoxiv.page
2025-07-18 09:39:22

Undulating patterns of Hysteresis loops in diurnal seasonality of air temperature in Urban Heat Island effect: Insights from Paris and Madrid
Suman Dharmasthala, Vittal Hari, Rohini Kumar
https://arxiv.org/abs/2507.13075

Undulating patterns of Hysteresis loops in diurnal seasonality of air temperature in Urban Heat Island effect: Insights from Paris and Madrid
This study examines the dynamics of the urban heat island (UHI) effect by conducting a comparative analysis of air temperature hysteresis patterns in Paris and Madrid, two major European cities with distinct climatic and urban characteristics. Utilizing high-resolution modelled air temperature data aggregated at a fine temporal resolution of three-hour intervals from 2008 to 2017, we investigate how diurnal and seasonal hysteresis loops reveal both unique and universal aspects of UHI variabilit…

@arXiv_eessSP_bot@mastoxiv.page
2025-07-18 08:57:12

Enhancing Urban GNSS Positioning Reliability via Conservative Satellite Selection Using Unanimous Voting Across Multiple Machine Learning Classifiers
Sanghyun Kim, Jiwon Seo
https://arxiv.org/abs/2507.12706

Enhancing Urban GNSS Positioning Reliability via Conservative Satellite Selection Using Unanimous Voting Across Multiple Machine Learning Classifiers
In urban environments, global navigation satellite system (GNSS) positioning is often compromised by signal blockages and multipath effects caused by buildings, leading to significant positioning errors. To address this issue, this study proposes a robust enhancement of zonotope shadow matching (ZSM)-based positioning by employing a conservative satellite selection strategy using unanimous voting across multiple machine learning classifiers. Three distinct models - random forest (RF), gradient …

@arXiv_astrophGA_bot@mastoxiv.page
2025-08-19 08:55:59

Blue supergiants in the Pinwheel Galaxy M101: comparison with H II region chemical abundances, spectroscopic distance and an independent determination of the Hubble constant
Fabio Bresolin, Rolf-Peter Kudritzki, Miguel A. Urbaneja, Eva Sextl, Adam G. Riess
https://arxiv.org/abs/2508.11837

Blue supergiants in the Pinwheel Galaxy M101: comparison with H II region chemical abundances, spectroscopic distance and an independent determination of the Hubble constant
We present a quantitative spectroscopic study of 13 blue supergiant stars in the Pinwheel Galaxy M101, based on data obtained with the Low Resolution Imaging Spectrometer available at the Keck I telescope. The average stellar metallicity decreases from ~1.9 Zsun near the center of the galaxy to ~0.3 Zsun at the optical outskirts. The galactocentric radial metallicity gradient is statistically consistent with previous studies of the gas-phase oxygen abundance from H II regions using the direct m…

@leftsidestory@mstdn.social
2025-07-20 00:30:05

A Garden Aloft ⛲️
空中花园 ⛲️
📷 Nikon FE
🎞️Ilford FP4 Plus, expired 1994
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Ilford FP4 Plus 125 (FF)

**English:**
A black and white photograph featuring a large ceramic pot with broad-leafed plants. The pot is placed on a concrete surface adjacent to a wooden deck. The leaves are lush and appear to be thriving, casting shadows on the pot and the surrounding area.

**Chinese:**
一张黑白照片，展示了一个大陶盆，里面种着宽叶植物。陶盆放在靠近木甲板的混凝土表面上。叶子茂盛，看起来生机勃勃，在陶盆和周围区域投下阴影。

Ilford FP4 Plus 125 (FF)

**English:**
A black and white photograph showing a large pot filled with water. The pot is placed on a wooden surface. The surrounding area appears to be outdoors, with some plants and possibly a garden setting.

**Chinese:**
一张黑白照片，展示了一个装满水的大陶缸。缸放在木质表面上。周围的环境看起来像是户外，有些植物，可能是一个花园场景。

Ilford FP4 Plus 125 (FF)

**English:**
A black and white photograph depicting various cleaning tools and supplies leaning against a tiled wall. The items include brooms, brushes, and other cleaning equipment, arranged in a somewhat cluttered manner.

**Chinese:**
一张黑白照片，展示了各种清洁工具和用品靠在一个铺有瓷砖的墙上。这些物品包括扫帚、刷子和其他清洁设备，排列得有些杂乱。

Ilford FP4 Plus 125 (FF)

**English:**
A black and white photograph showing a branch with large, distinct leaves silhouetted against a bright background. The leaves are prominently displayed, with some urban structures faintly visible in the background, suggesting an outdoor setting in a city.

**Chinese:**
一张黑白照片，展示了一根树枝，树枝上有大而明显的叶子，在明亮的背景下形成剪影。叶子非常突出，背景中隐约可见一些城市建筑，表明这是一个城市中的户外场景。

@arXiv_csSI_bot@mastoxiv.page
2025-07-16 08:36:11

Urban delineation through the lens of commute networks: Leveraging graph embeddings to distinguish socioeconomic groups in cities
Devashish Khulbe, Stanislav Sobolevsky
https://arxiv.org/abs/2507.11057

Urban delineation through the lens of commute networks: Leveraging graph embeddings to distinguish socioeconomic groups in cities
Delineating areas within metropolitan regions stands as an important focus among urban researchers, shedding light on the urban perimeters shaped by evolving population dynamics. Applications to urban science are numerous, from facilitating comparisons between delineated districts and administrative divisions to informing policymakers of the shifting economic and labor landscapes. In this study, we propose using commute networks sourced from the census for the purpose of urban delineation, by m…

@tml@urbanists.social
2025-07-11 19:12:32

Ah, just noticed that #Parallels Desktop on Apple Silicon Macs doesn't support #WSL2 in a Windows VM. Good that I found out in time, before deciding to go down that route for some Windows needs, that requires WSL2.

@leftsidestory@mstdn.social
2025-07-18 00:30:03

Life on Different Paths III🚶🚶‍♀️🚶‍♂️
生活诸多路径 III🚶🚶‍♀️🚶‍♂️
📷 Nikon FE
🎞️FOMAPAN Action 400
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Foma FOMAPAN 400 Action (FF)

📝 English alt text:
A black and white photo of an urban street scene featuring tall apartment buildings. A person stands beside a white Mercedes-Benz G-Class SUV, looking down at their phone. The road includes bicycles and cars, and overhead, power lines stretch above a speed limit sign reading 30 km/h.

📝 中文替代文本:
一张黑白城市街景照片，画面中有高层公寓楼。一人站在白色奔驰G级SUV旁边，低头看手机。道路上有自行车和汽车，上方是电线和限速30公里/小时的交通标志。

Foma FOMAPAN 400 Action (FF)

📝 English alt text:
A black and white photograph of two parked cars, with a cat sitting beneath the front bumper of the car in the foreground. The vehicle’s license plate reads “IIIA-BN3095.” Dappled sunlight filters through nearby trees, casting soft shadows and light patches on the ground, cars, and the quiet feline.

📝 中文替代文本：
一张黑白照片，画面中两辆车停在路边，前方车辆底下蹲着一只猫。车牌显示为“IIIA-BN3095”。阳光透过树木洒在地面和车辆上，形成斑驳的光影，营造出静谧氛围。

Foma FOMAPAN 400 Action (FF)

📝 English alt text:
A black and white street photo showing a man standing beside a small truck loaded with potted plants. Several additional plants are arranged on the ground in front of the vehicle. The background features urban elements such as parked motorcycles, scooters, other small trucks, buildings, and trees. The overall scene conveys a casual, everyday atmosphere with a timeless, documentary-style quality.

📝 中文替代文本：
一张黑白街头照片，一名男子站在载满盆栽的小卡车旁，车前地面上也摆放着一些盆栽。…

Foma FOMAPAN 400 Action (FF)

📝 English alt text:
A casual outdoor gathering scene featuring three people seated around a small table with bowls, containers, and miscellaneous items on it. A fourth person stands nearby, engaging with the group. To the left, a scooter covered with a tarp and a black car are parked along the street. The setting includes plastic chairs, surrounding trees, and distant buildings, suggesting a laid-back street-side atmosphere.

📝 中文替代文本：
一个休闲的户外场景，三人围坐在小桌旁，桌上放有碗、容器及其…

@leftsidestory@mstdn.social
2025-08-17 00:30:02

City Features V 🌆
城市特征 V 🌆
📷 Nikon FE
🎞️Ilford FP4 Plus, expired 1994
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Ilford FP4 Plus 125 (FF)
English Alt Text:
A black and white image showing a stack of sandbags placed on a wooden pallet behind a metal railing. Part of a car and other urban structures are visible in the background.

中文替代文字：
一张黑白照片，画面显示一堆沙袋堆放在木托盘上，位于金属栏杆后方。背景中可见部分汽车和其他城市结构。

Ilford FP4 Plus 125 (FF)
English Alt Text:
A black and white urban scene featuring a large concrete pillar supporting an overpass. Two surveillance cameras are mounted above. A car speeds past in the foreground, appearing blurred due to motion. Behind it are trees, a pedestrian bridge, parked cars, and a fence.

中文替代文字：
一张黑白城市照片，画面中心是一根支撑高架桥的大型混凝土柱。上方安装了两个监控摄像头。前景中一辆汽车快速驶过，因运动而模糊。背景中有树木、人行天桥、停放的车辆和栅栏。

Ilford FP4 Plus 125 (FF)
English Alt Text:
A black and white photo of a street-side bus stop partially obscured by a twisted tree trunk in the foreground. People wait at the stop, one holding a phone. The bus stop sign reads “望京桥东” (Wangjing Qiaodong) and lists route 921. Cars, traffic lights, and distant buildings suggest an urban setting.

中文替代文字：
一张黑白照片，画面中前景是一棵扭曲的树干，部分遮挡了街边公交车站。几位乘客在候车，其中一人拿着手机。公交站牌上写着“望京桥东”，列出了921路公交。背景中有汽车、红绿灯和远处的建筑，呈现出城市环境。

Ilford FP4 Plus 125 (FF)
English Alt Text:
A black and white photo taken from outside a vehicle, likely a bus or train, showing passengers inside. Reflected Chinese text overlays the window, partially obscuring the view. One person wearing a cap and mask is seated in the foreground, while another figure is visible in the dimly lit background. The interplay of shadows and reflections creates a layered, mysterious atmosphere.

中文替代文字：
一张黑白照片，从车外拍摄，画面显示车内乘客，可能是公交车或地铁。窗户上反射出中文文字，部分遮挡了视线。前景中一位戴帽子和口罩…

@leftsidestory@mstdn.social
2025-09-16 00:30:08

On The Road - To Xi’An/ Signs 💚
在路上 - 去西安/ 表象 💚
📷 Pentax MX
🎞️Fujifilm Neopan F, expired 1993
#filmphotography #Photography #blackandwhite

FUJIFILM NEOPAN F (FF)

English Alt Text:
A black-and-white photo of a city sidewalk lined with large trees forming a canopy overhead. The tiled walkway includes a tactile path for visually impaired pedestrians. Bicycles are parked along the edge, and a few people walk in the distance. On the left, storefronts and signs suggest a commercial area. The scene blends nature and urban life, with shadows and textures adding depth.

中文替代文字：
这是一张黑白照片，描绘了城市人行道的景象。人行道两旁是枝繁叶茂的大树，形成树冠遮蔽。地面铺有瓷砖，并设有盲道供视障者使用。…

FUJIFILM NEOPAN F (FF)

English Alt Text:
A black-and-white photo of a street in China. In the foreground, a tailor works at a sewing machine inside a small shop. Signs in Chinese characters hang outside, reading “Southern Tailor” and “Alter clothes and pant hems.” Trees, scooters, and pedestrians line the sidewalk. The scene captures everyday life and traditional craftsmanship in an urban setting.

中文替代文字：
这是一张黑白照片，拍摄于中国街头。前景是一家裁缝店，一位裁缝正在缝纫机前工作。店外挂着中文招牌，写着“南方裁缝”和“改衣服裤边”。人行道上有树木、电动车和行人。画面展现了城市环…

FUJIFILM NEOPAN F (FF)

English Alt Text:
A black-and-white photo showing an elevated railway track supported by concrete pillars. Overhead electric lines run above the track. On the left, two road signs are visible: one shows a speed limit of 30 km/h, and the other indicates a bicycle path below. Trees and a metal fence line the foreground. The image highlights urban transportation infrastructure and signage.

中文替代文字：
这是一张黑白照片，展示了城市交通基础设施。右侧是由混凝土柱支撑的高架铁路轨道，轨道上方有电线。左侧有两个交通标志：一个显示限速30公里/小时，另一个是自…

FUJIFILM NEOPAN F (FF)

English Alt Text:
A black-and-white photo of a multi-layered urban infrastructure. At the top, a concrete railway bridge with overhead electric lines carries trains. Beneath it, a second bridge with metal railings likely serves cars or pedestrians. Below that, large industrial pipes run horizontally, supported by vertical beams. At street level, a fenced pedestrian walkway with leafless trees suggests winter or early spring. The monochrome palette emphasizes the textures…

@leftsidestory@mstdn.social
2025-09-17 00:30:02

On The Road - To Xi’An/ Urban Spots 🟤
在路上 - 去西安/ 城市的点 🟤
📷 Pentax MX
🎞️Fujifilm Neopan F, expired 1993
#filmphotography #Photography #blackandwhite

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