628 research outputs found
Road Quality Classification
Automatické vyhodnocování kvality vozovky může být užitečné jak správním orgánům, tak i těm účastníkům silničního provozu, kteří vyhledávají vozovky s kvalitním povrchem pro co největší potěšení z jízdy. Tato práce se zabývá návrhem modelu, který klasifikuje obrázky silnic do pěti kvalitativních kategorií na základě jejich celkového vzhledu. V práci prezentujeme nový ručně anotovaný dataset, obsahující fotografie ze služby Google Street View. Anotace datasetu byla navržena pro motorkáře, ale může být použita i pro jiné účastníky silničního provozu. Experimentovali jsme jak s předučenými konvolučními neuronovými sítěmi, jako jsou MobileNet či DenseNet, tak s vlastními architekturami konvolučních neuronových sítí. Dále jsme vyzkoušeli různé techniky předzpracování dat, např. odstraňování stínů či kontrastně-limitní adaptabilní histogramovou ekvalizací (CLAHE). Námi navrhovaný klasifikační model využívá CLAHE a na testovací sadě dosahuje 71% přesnosti. Vizuální kontrola ukázala, že navrhovaný model je i s touto přesností využitelný za účelem, pro který byl navržen.Automated evaluation of road quality can be helpful to authorities and also road users who seek high-quality roads to maximize their driving pleasure. This thesis proposes a model which classifies road images into five qualitative categories based on overall appearance. We present a new manually annotated dataset, collected from Google Street View. The dataset classes were designed for motorcyclists, but they are also applicable to other road users. We experimented with Convolutions Neural Networks, involving custom architectures and pre-trained networks, such as MobileNet or DenseNet. Also, many experiments with preprocessing methods such as shadow removal or CLAHE. Our proposed classification model uses CLAHE and achieves 71% accuracy on a test set. A visual check showed the model is applicable for its designed purpose despite the modest accuracy since the image data are often controversial and hard to label even for humans
Alien Registration- Lank, David (Kennebunk, York County)
https://digitalmaine.com/alien_docs/3940/thumbnail.jp
Descent conditions for generation in derived categories
This work establishes a criterion that determines when strong generation
within the bounded derived category of a Noetherian scheme is preserved under
the derived pushforward of a proper morphism. Consequently, this criterion
produces upper bounds on Rouquier dimension of the bounded derived category,
and applications concerning affine varieties are studied. Finally, it is
demonstrated that the bounded derived category of a Noetherian scheme of finite
type over a perfect field admits a strong generator, yielding new examples that
may not necessarily be separated.Comment: Comments welcome; v
Habitat Fragmenta-on in the Sebago Lake Watershed
The goal of this research was to evaluate the extent of land use change occurring in the Sebago lake watershed of southern Maine. The primary data set used was Landsat 7 Near Infrared satellite imagery of the region which was analyzed with ESRI’s ArcGIS soQware. Data was clipped to the Portland Water District’s sub watershed shape file and analyzed with the soQware’s image analysis ‘difference’ tool which calculates the differences in pixel values between to raster datasets. The 2013 Landsat reclassifica-on was compared to 1987, 1995 and 2009 reclassifica-ons. NOAA’s Habitat Priority Planner plugin tool was also u-lized in order to create an excel based dataset of sub watersheds most at risk of being degraded. Once all data was compiled, an open access map of the watershed cloropleth map of the risk assessment data was uploaded to Carto DB for public access and future reference by Portland Water District
Bovine electrocardiography in normal, tranquilized and certain abnormal animals.
http://www.worldcat.org/oclc/1114500
Trade-offs, condition dependence and stopover site selection by migrating sandpipers
Western sandpipers Calidris mauri on southward migration fly over the Gulf of Alaska to the Strait of Georgia, British Columbia, where they stop for a few days to replenish reserves before continuing. In the Strait, individuals captured on the extensive tidal mudflats of the Fraser estuary (∼25000 ha) are significantly heavier (2.71 g, or >10% of lean body mass) than those captured on the small (<100 ha) mudflat of nearby Sidney Island. Previous work has shown that the difference cannot be attributed to seasonal timing, size, age or gender effects, and here we compare predictions made by six hypotheses about a diverse set of data to explain why, partway through a migratory journey of ∼10000 km, birds have such different body masses at two stopover sites within 40 km of each other. The ‘trade-off’ hypothesis – that the large Fraser estuary offers safety from predators, but a lower fattening rate, while the small Sidney Island site is more dangerous, but offers a higher fattening rate – made six successful predictions, all of which were upheld by the data. All other hypotheses failed at least one prediction. We infer that calidrid sandpipers arriving in the Strait of Georgia with little fat remaining (and therefore low body mass) choose to take advantage of the high feeding rate at small sites like Sidney Island because they are less vulnerable to avian predators than are individuals with higher fat reserves, who instead elect to feed at large open sites like the Fraser estuary mudflats
Strong generation and (co)ghost index for module categories
This work focuses on notions of generation and (co)ghost index in the module
category of a Noetherian commutative ring. In particular, a sufficiency
condition is established for the existence of strong generators in the module
category of a Noetherian ring. As a result, this provides an affirmative answer
to a question posed by Iyengar and Takahashi. Furthermore, the techniques
developed provide upper bounds on the Rouquier dimension and rank respectively
for the singularity category and category of maximal Cohen-Macaulay modules.
Additionally, a local-to-global principle for (co)ghost index in the module
category is investigated, and explicit computations are provided.Comment: V1, comments welcome; v2 consists of additional coauthors and massive
improvements to results; v3, no changes, add grant informatio
Creating Your Bubble: Personal Space On and Around Large Public Displays
We describe an empirical study that explores how users establish and use personal space around large public displays (LPDs). Our study complements field studies in this space by more fully characterizing interpersonal distances based on coupling and confirms the use of on-screen territories on vertical displays. Finally, we discuss implications for future research: limitations of proxemics and territoriality, how user range can augment existing theory, and the influence of display size on personal space
Living from existing; Parasitic architecture
Biyoloji alanında karşımıza çıkan simbiyoz kavramı, iki organizma arasındaki
her türlü ilişkiyi tarif etmektedir. Parazitlik kavramı ise bu iki organizmadan birinin
aralarındaki ilişkiden yarar sağladığı ve diğer organizmanın ise zarar gördüğü bir ilişki
durumunu anlatmaktadır. Bu ilişkide konak durumundaki organizma parazit olarak
tanımlanan organizmanın taşıyıcısı ve besin kaynağıdır. Bahsi geçen taşıyıcılar
mimaride, kent sistemlerini oluşturan mevcut yapılardır ve bu yapılara eklemlenen yeni
birimler ise parazit mimari örnekleri olarak anılmaktadır. Kısaca parazit mimari, konak
yapı ile arasındaki ilişkiden beslenen, konağa uyum sağlayabilen, geçici ve sömürücü
bir mimari biçim olarak tanımlanabilir. Fakat biyolojideki parazitlikten farklı olarak
mimarideki parazitlikte konak yapı zarar görmez.
Bu çalışmada parazit mimarinin özellikleri belirlenip, literatürden ve internet
arama motorlarından elde edilen ve parazit mimari örneği sayılan yüz adet yapının
parazitlikleri değerlendirilmiştir.
Bu kapsamda çalışma beş bölümden oluşmaktadır.
Birinci bölümde çalışmanın amacı, önemi ve kapsamı vurgulanmıştır. Çalışma
yapılırken karşılaşılan sorunlara ve bu soruların çözümlerine yer verilmiştir.
İkinci bölümde simbiyoz, parazit, parazit mimari kavramları ile parazit
mimarinin tarihsel gelişimi araştırılmış ve bu araştırmalar dahilinde parazit mimarinin
özellikleri belirlenmiştir.
Üçüncü bölümde, parazit mimari örneklerinin sistematik olarak derlenebilmesi
için seçilen yöntem vurgulanmıştır. Bu bağlamda oluşturulan değerlendirme tablolarına
ve bu tabloların oluşum aşamalarına yer verilmiştir.
Dördüncü bölümde literatürden ve internet arama motorlarından elde edilen
örnekler hakkında bilgiler verilmiş ve yöntem bölümünde oluşturulan tablolar bu
bilgiler ışığında doldurulmuştur.
Beşinci bölüm ise tüm örneklerin değerlendirmelerini ve varılan sonuçları
kapsamaktadır.The concept of symbiosis, which we encounter in the field of biology, describes
all kinds of relationships between two organisms. The concept of parasitism, on the
other hand, describes a relationship in which one of these two organisms benefit from
the relationship between them and the other organism is harmed. In this relationship, the
host organism is the carrier and food source of the organism defined as the parasite. The
aforementioned carriers are the existing structures that make up the urban systems, and
the new units added to these structures are referred as parasitic architecture examples. In
short, parasitic architecture can be defined as a temporary and exploitative architectural
form that can adapt to the host, nourished by the relationship between the host and the
building. However, unlike parasitism in biology, the host structure is not damaged in
parasitism in architecture.
In this study, the characteristics of the parasite architecture were determined and
the parasitism of hundred structures, which were obtained from the literature and web
search engines and considered as examples of parasite architecture, were evaluated.
In the first chapter, the aim, importance and scope of the study are emphasized.
The problems encountered during the study and the solutions to these questions are
included.
In the second chapter, the concepts of symbiosis, parasite, parasite architecture
and the historical development of parasitic architecture were investigated and the
characteristics of parasitic architecture were determined within the scope of these
studies.
In the third chapter, the chosen method for systematic compilation of parasite
architecture examples is highlighted. In this context, the evaluation tables created and
the stages of formation of these tables are included.
In the fourth chapter, information about the examples obtained from the
literature and web search engines is given and the tables created in the method section
are filled in the light of this information.
The fifth chapter covers the evaluations of all the examples and the conclusions
reached
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