scholarly journals Using satellite rainfall products to assess the triggering conditions for hydro-morphological processes in different geomorphological settings in China

Author(s):  
Nan Wang ◽  
Luigi Lombardo ◽  
Stefano Luigi Gariano ◽  
Weiming Cheng ◽  
Changjun Liu ◽  
...  
2015 ◽  
Vol 2 (3) ◽  
Author(s):  
Nabillah Djindan

Loinang languageis one of the languages which has not been researched, especially in Baloa Dodavillage, Pagimana sub-district, Banggai district, Central Sulawesi Province.This research focused on identifying the form of allomorph and analyzing theformation rule of allomorph in Loinang Language. The methode usedin this research is descriptive qualitative methode. The results showed that Loinang language consists of boundmorphemes such as prefix, suffix,infix, and confix. Each numbered 30 prefixes, 3 infixes, 3 suffixes, and, 13confixes as 49 pieces total affixes. Rules of formation of the appearance ofallomorph in Loinang language determined through the process of word formationor morphological processes, namely by affixation which form the class ofgrammatical categories of nouns, verbs, and adjectives. Allomorph found anappearance in a Loinang language, such as the morpheme members of paN- willmeet with the initial phonemes basic words /p/, /i/, /t/, /s/ to the variationsof allomorph pan-, pam-, paη-, morpheme members of poN- will meet with theinitial phonemes basic word /p/, /b/, /k/, /l/, /u/, /a/ to the variations ofallomorph po-, pom-, pompa-, pompo-, ponaη-, pon-, poη-, morpheme members ofpiN- will meet with the initial phonemes basic words /h/, /s/, /l/, /k/, /p/,/m/, /a/ to the variations of allomorph pi-, pin-, pino-, pinaha-, pinoko-,pinom-, pinompo-, pinoη-, morpheme members of tiN- will meet with the initialphonemes basic words /l/, /d/, /b/, /k/ to the variations of allomorph tina-,tinala-, tino-, tinom-, tinoη-, morpheme members of iN- will meet with theinitial phonemes basic words /h/, /l/, /i/, /o/ to the variations of allomorphi-, iη-, morpheme members of Mon- will meet with the initial phonemes basicwords /h/, /l/, /b/, /k/, /j/, /s/, /t/, /a/, /i/, /o/ to the variations ofallomorph mo-, mom-, mompo-, moη-, mon-, the form of allomorph -um- will meetonly with the basic word phonemes /t/ - /i/, /p/ - /u/, /g/ - /ԑ/, /t/ - /u/,/t/ - /i/, the form of allomorph -in- will only be met with the phonemes /p/ -/ԑ/, /t/ - /o/, /t/ - /a/, /t/ - /i/, /s/ - /u/, the form of allomorph -am-only be met with the phonemes /p/ - /a/, /m/ - /i/, /b/ - /a/, /p/ - /i/, /m/ -/ԑ/, the form of allomorph -mo will meet with the last phonemes basic words/i/, /a/, /s/, /Ɂ/, /n/, the form of allomorph -akon will meet with the lastphonemes basic words /η/, /m/, /o/, /u/, and the form of allomorph -i will meetwith the last phonemes basic words /η/,/m/,/s/. Keywords : Allomorph, Loinang, Generative


2019 ◽  
Vol 19 (4) ◽  
pp. 775-789 ◽  
Author(s):  
Elise Monsieurs ◽  
Olivier Dewitte ◽  
Alain Demoulin

Abstract. Rainfall threshold determination is a pressing issue in the landslide scientific community. While major improvements have been made towards more reproducible techniques for the identification of triggering conditions for landsliding, the now well-established rainfall intensity or event-duration thresholds for landsliding suffer from several limitations. Here, we propose a new approach of the frequentist method for threshold definition based on satellite-derived antecedent rainfall estimates directly coupled with landslide susceptibility data. Adopting a bootstrap statistical technique for the identification of threshold uncertainties at different exceedance probability levels, it results in thresholds expressed as AR = (α±Δα)⋅S(β±Δβ), where AR is antecedent rainfall (mm), S is landslide susceptibility, α and β are scaling parameters, and Δα and Δβ are their uncertainties. The main improvements of this approach consist in (1) using spatially continuous satellite rainfall data, (2) giving equal weight to rainfall characteristics and ground susceptibility factors in the definition of spatially varying rainfall thresholds, (3) proposing an exponential antecedent rainfall function that involves past daily rainfall in the exponent to account for the different lasting effect of large versus small rainfall, (4) quantitatively exploiting the lower parts of the cloud of data points, most meaningful for threshold estimation, and (5) merging the uncertainty on landslide date with the fit uncertainty in a single error estimation. We apply our approach in the western branch of the East African Rift based on landslides that occurred between 2001 and 2018, satellite rainfall estimates from the Tropical Rainfall Measurement Mission Multi-satellite Precipitation Analysis (TMPA 3B42 RT), and the continental-scale map of landslide susceptibility of Broeckx et al. (2018) and provide the first regional rainfall thresholds for landsliding in tropical Africa.


Geosciences ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 35
Author(s):  
Luca Schilirò ◽  
José Cepeda ◽  
Graziella Devoli ◽  
Luca Piciullo

In Norway, shallow landslides are generally triggered by intense rainfall and/or snowmelt events. However, the interaction of hydrometeorological processes (e.g., precipitation and snowmelt) acting at different time scales, and the local variations of the terrain conditions (e.g., thickness of the surficial cover) are complex and often unknown. With the aim of better defining the triggering conditions of shallow landslides at a regional scale we used the physically based model TRIGRS (Transient Rainfall Infiltration and Grid-based Regional Slope stability) in an area located in upper Gudbrandsdalen valley in South-Eastern Norway. We performed numerical simulations to reconstruct two scenarios that triggered many landslides in the study area on 10 June 2011 and 22 May 2013. A large part of the work was dedicated to the parameterization of the numerical model. The initial soil-hydraulic conditions and the spatial variation of the surficial cover thickness have been evaluated applying different methods. To fully evaluate the accuracy of the model, ROC (Receiver Operating Characteristic) curves have been obtained comparing the safety factor maps with the source areas in the two periods of analysis. The results of the numerical simulations show the high susceptibility of the study area to the occurrence of shallow landslides and emphasize the importance of a proper model calibration for improving the reliability.


2018 ◽  
Vol 26 (3) ◽  
pp. 198-210 ◽  
Author(s):  
Suat Gonul ◽  
Tuncay Namli ◽  
Sasja Huisman ◽  
Gokce Banu Laleci Erturkmen ◽  
Ismail Hakki Toroslu ◽  
...  

AbstractObjectiveWe aim to deliver a framework with 2 main objectives: 1) facilitating the design of theory-driven, adaptive, digital interventions addressing chronic illnesses or health problems and 2) producing personalized intervention delivery strategies to support self-management by optimizing various intervention components tailored to people’s individual needs, momentary contexts, and psychosocial variables.Materials and MethodsWe propose a template-based digital intervention design mechanism enabling the configuration of evidence-based, just-in-time, adaptive intervention components. The design mechanism incorporates a rule definition language enabling experts to specify triggering conditions for interventions based on momentary and historical contextual/personal data. The framework continuously monitors and processes personal data space and evaluates intervention-triggering conditions. We benefit from reinforcement learning methods to develop personalized intervention delivery strategies with respect to timing, frequency, and type (content) of interventions. To validate the personalization algorithm, we lay out a simulation testbed with 2 personas, differing in their various simulated real-life conditions.ResultsWe evaluate the design mechanism by presenting example intervention definitions based on behavior change taxonomies and clinical guidelines. Furthermore, we provide intervention definitions for a real-world care program targeting diabetes patients. Finally, we validate the personalized delivery mechanism through a set of hypotheses, asserting certain ways of adaptation in the delivery strategy, according to the differences in simulation related to personal preferences, traits, and lifestyle patterns.ConclusionWhile the design mechanism is sufficiently expandable to meet the theoretical and clinical intervention design requirements, the personalization algorithm is capable of adapting intervention delivery strategies for simulated real-life conditions.


Lire Journal ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 92-109
Author(s):  
Giyatmi - Giyatmi ◽  
Sihindun Arumi ◽  
Mas Sulis Setiyono

This study aims at describing the process of word-formation used on messaging applications found in the Play Store. This is descriptive qualitative research. The data are messaging applications written in English and in the form of words. To collect the data, the researchers use observation. The analysis data consists of three steps namely data reduction, data display, and verification. There are 56 data found. There are 6 types of word formations; Affixation (4 data), compounding (15 data), blending (4 data), coinage (8 data), clipping (4 data), reduplication (1 data). However, there are 20 messaging applications that cannot be classified into the type of word formation such as Path, Line, Lemon, etc. They are simple words that have already existed in English and have been used in everyday communication. Meanwhile, nowadays they are used as a name of messaging applications and have different meanings as the real meaning. The suffixes used in the affixation process are –er, -ous, -ster. There are 6 formations of compounding used in the messaging application such as N+N, V+V, N+V, V+N, Adv. + Prep. There are 3 ways of blending process such as taking the whole part of the first word and taking the first syllable of the second, taking the first syllable of the first word and taking the whole part of the second word, taking two syllables from the front part of the first word and taking the last syllable of the second word. Coinage consists of the name of the company and the name of the product. There are two types of clipping found namely fore-clipping and back-clipping. Reduplication happens when there is a copying of the partial part of the word. Apparently, there are morphological processes used in life such as word formation to name the messaging application.


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