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@leftsidestory@mstdn.social
2026-03-28 00:38:55

Mundane Things VII🌀
普通物件 VII 🌀
📷 Nikon FE
🎞️ Ilford FP4 Plus 125, expired 1993
If you like my work, buy me a coffee from PayPal #filmphotography

Ilford FP4 Plus 125 (FF) English A black-and-white photograph capturing a view looking up at two tall apartment buildings. The buildings have numerous windows and balconies, creating a symmetrical and repetitive pattern. The sky is visible between the buildings, and the perspective emphasizes the height and uniformity of the structures. 中文 一张黑白照片，拍摄的是仰视两栋高层公寓楼的视角。楼房有许多窗户和阳台，形成对称且重复的图案。两栋楼之间可见天空，视角强调了建筑的高度和统一性。
Ilford FP4 Plus 125 (FF) English A black-and-white photograph showing a tall pole with multiple surveillance cameras attached to it. The cameras are pointed in different directions. In the background, there is a tall apartment building with many windows and balconies. Leafless tree branches are visible in front of the building. 中文 一张黑白照片，展示了一个高高的杆子，杆子上安装了多个监控摄像头，摄像头指向不同的方向。背景中有一栋高层公寓楼，楼上有许多窗户和阳台。楼前有光秃秃的树枝。
Ilford FP4 Plus 125 (FF) English A black-and-white photograph showing a paved surface with a single dried leaf lying on the ground. The leaf is positioned near the bottom center of the image. The pavement is composed of large rectangular tiles, and there are faint shadows cast across the surface. 中文 一张黑白照片，展示了一个铺砌的地面，地面上有一片干枯的叶子，位于图片底部中央。地面由大块矩形瓷砖组成，地面上有淡淡的影子。
Ilford FP4 Plus 125 (FF) English A black-and-white photograph featuring three empty plastic crates stacked on wheeled dollies. The crates are placed against a corrugated metal wall with vertical lines. A pipe runs vertically along the wall, and there is a small window or vent near the top left of the wall. 中文 一张黑白照片，展示了三个空的塑料箱子堆放在带轮子的手推车上。箱子靠着一面带有垂直线条的波纹金属墙。墙上有一根垂直的管道，左上角附近有一个小窗户或通风口。
@leftsidestory@mstdn.social
2026-03-27 00:34:17

Harman Switch Azure First Impression 🥰
哈曼Switch Azure第一印象 🥰
📷 Nikon F4E
🎞️ Harman Switch Azure
If you like my work, buy me a coffee from PayPal paypal.com/paypalme/ydcdingsite

Harman Switch Azure (FF) English A street scene with a vendor truck parked on the right side. The truck has a banner in Chinese characters and is selling bags of apples, some stacked on the truck bed and some on the ground. Two people are near the truck, one standing and one sitting. In the foreground, a person on a bicycle is slightly blurred, carrying large white bags. The background shows a city street with buildings, trees, and a few pedestrians. 中文 街头场景，右侧停着一辆货车，车上挂着汉字横幅，正在售卖苹果，部分装袋堆放在…
Harman Switch Azure (FF) English A city street at dusk, with a street sign in both Chinese and English reading "Guanghua St" and "Guangxin South St." The sky is orange, indicating sunset or heavy pollution. A row of blue lanterns hangs from a traffic light pole on the left. In the background, there are tall apartment buildings, and a bare tree is visible on the right. 中文 黄昏时分的城市街道，街牌上用中英文标注“光华街”和“广信南街”。天空呈橙色，暗示日落或空气污染严重。左侧交通灯杆上挂着一排蓝色灯笼。背景是高层公寓楼，右侧可见光秃的树木。
Harman Switch Azure (FF) English A hazy cityscape at sunset or sunrise, with the sun appearing as a bright spot in the orange sky. The skyline is filled with tall buildings, and the foreground shows silhouettes of structures and possibly a bridge or overpass. The atmosphere is hazy, likely due to pollution or mist. 中文 日落或日出时分的城市景观，太阳在橙色天空中呈现一个明亮的光点。天际线布满高楼大厦，前景是建筑物和可能的立交桥或高架桥的剪影。大气朦胧，可能是雾霾或薄雾所致。
Harman Switch Azure (FF) English A park or temple area at dusk, featuring two traditional Chinese pagodas in the background. The sky is orange-pink, suggesting sunset. Leafless trees line a paved path, and the area is surrounded by low bushes and greenery. The scene is calm and serene, with no people visible. 中文 黄昏时分的公园或寺庙区域，背景有两座中国传统宝塔。天空呈橘粉色，暗示日落时分。光秃的树木沿着铺好的小路排列，周围有低矮灌木和绿植。场景宁静祥和，没有行人。
@arXiv_csDS_bot@mastoxiv.page
2026-02-09 07:46:50

Towards Efficient Data Structures for Approximate Search with Range Queries
Ladan Kian, Dariusz R. Kowalski
arxiv.org/abs/2602.06860 arxiv.org/pdf/2602.06860 arxiv.org/html/2602.06860
arXiv:2602.06860v1 Announce Type: new
Abstract: Range queries are simple and popular types of queries used in data retrieval. However, extracting exact and complete information using range queries is costly. As a remedy, some previous work proposed a faster principle, {\em approximate} search with range queries, also called single range cover (SRC) search. It can, however, produce some false positives. In this work we introduce a new SRC search structure, a $c$-DAG (Directed Acyclic Graph), which provably decreases the average number of false positives by logarithmic factor while keeping asymptotically same time and memory complexities as a classic tree structure. A $c$-DAG is a tunable augmentation of the 1D-Tree with denser overlapping branches ($c \geq 3$ children per node). We perform a competitive analysis of a $c$-DAG with respect to 1D-Tree and derive an additive constant time overhead and a multiplicative logarithmic improvement of the false positives ratio, on average. We also provide a generic framework to extend our results to empirical distributions of queries, and demonstrate its effectiveness for Gowalla dataset. Finally, we quantify and discuss security and privacy aspects of SRC search on $c$-DAG vs 1D-Tree, mainly mitigation of structural leakage, which makes $c$-DAG a good data structure candidate for deployment in privacy-preserving systems (e.g., searchable encryption) and multimedia retrieval.
toXiv_bot_toot

@leftsidestory@mstdn.social
2026-01-23 00:30:03

Some City Some Nature 🏙️🪾
一些城一些自然 🏙️🪾
📷 Nikon F4E
🎞️ ERA 100, expired 1993
#filmphotography #Photography #blackandwhite

ERA 100 (FF) English Alt Text: A black and white image of a mountainous landscape with rugged terrain in the background. Two tall metal transmission towers dominate the foreground, with power lines stretching horizontally across the sky. At the base of the towers, rooftops of buildings peek through the vegetation. The scene contrasts natural majesty with industrial presence, highlighting how infrastructure intersects with untouched land. The monochrome effect adds drama and starkness to the co…
ERA 100 (FF) English Alt Text: A close-up black and white photograph of a metal wire fence with a diamond-shaped pattern. Dense foliage surrounds and weaves through the fence, with large, broad leaves suggesting a mature plant overtaking the structure. The contrast between the rigid geometry of the fence and the organic curves of the leaves highlights nature’s quiet persistence. The monochrome palette emphasizes texture and depth, drawing attention to the interplay of light and shadow on both …
ERA 100 (FF) English Alt Text: A narrow, unpaved alleyway winds between overgrown vegetation and a low stone wall. The wall is topped with broken ceramic shards, possibly remnants of dishes or pots. On the right, a wooden fence post leans amid wild plants. In the distance, small brick structures peek through the foliage, suggesting an abandoned or rural setting. The black and white tone evokes nostalgia and quiet decay, capturing a moment of stillness in a forgotten place. 中文替代文字： 这是一条狭窄的未铺设小径…
ERA 100 (FF) English Alt Text: A moody black and white photograph featuring the silhouette of a leafless tree branch in the foreground. On the right, leafy branches add texture. In the background, faint outlines of a road, vegetation, and power lines stretch across a dim sky, possibly at twilight or under overcast conditions. The composition evokes solitude and quiet contemplation, with stark contrasts between the dark branches and the pale sky. 中文替代文字： 这是一张黑白照片，画面前景是一根光秃的树枝剪影，右侧有些带叶的枝条增添层次。背景…
@leftsidestory@mstdn.social
2026-01-02 00:30:01

Past and Sapiens 🉐
过去和智人 🉐
📷 Nikon F4E
🎞️ ERA 100, expired 1993
#filmphotography #Photography #blackandwhite

ERA 100 (FF) English Alt Text: A black-and-white photo captures a serene outdoor scene with tall grass and trees. Three people are present: one stands on the left, another walks away in the center, and a third crouches or sits nearby. All are dressed for cool weather. The image conveys solitude, quiet exploration, and a peaceful connection with nature. 中文替代文字： 这张黑白照片展现了一个宁静的户外场景，前景是高草，背景是树木。画面中有三人：一人在左侧站立，一人在中央背对镜头行走，另一人蹲坐在附近。他们穿着适合凉爽天气的衣物。画面传达出孤独、探索和与自然和平相处的氛围。
ERA 100 (FF) English Alt Text: A black-and-white photo shows a person standing near a tree in a densely vegetated area. The person wears a hat and holds a bag, possibly collecting or hanging something. Tall grasses and trees fill the scene, creating a misty, mysterious atmosphere. The image suggests quiet activity in nature. 中文替代文字： 这是一张黑白照片，画面中一人站在树旁，周围是茂密的植被。此人戴帽子，手持一个袋子，似乎在采集或悬挂物品。高草和树木充满整个画面，营造出朦胧而神秘的氛围。画面暗示着在自然中进行的安静活动
ERA 100 (FF) English Alt Text: A black-and-white photograph depicts two individuals sitting on a bench in a park. Trees in the foreground partially obscure the view. The bench is on a paved path surrounded by grass and trees. The two people appear to be talking or quietly sitting together. The scene feels peaceful and contemplative. 中文替代文字： 这张黑白照片展示了两人坐在公园的长椅上。前景中的树木部分遮挡了视线。长椅位于铺设的小路上，周围是草地和树木。两人似乎在交谈或静静地坐着。整个场景宁静而富有沉思气息。
ERA 100 (FF) English Alt Text: A black-and-white photograph shows a dense forest in the foreground with two tall industrial smokestacks rising in the background. The smokestacks have horizontal bands and are partially obscured by treetops. The sky is overcast, casting a muted light over the scene. The contrast between the natural greenery and the industrial structures evokes themes of environmental tension and coexistence. 中文替代文字： 这是一张黑白照片，前景是茂密的森林，背景中有两根高大的工业烟囱从树顶后方升起。烟囱上有水平条纹，部分被树冠遮挡。天空阴沉，光…