Äriprotsessimudelite ühildamine

Väitekirja elektrooniline versioon ei sisalda publikatsioone.Ettevõtted, kellel on aastatepikkune kogemus äriprotsesside haldamises, omavad sageli protsesside repositooriumeid, mis võivad endas sisaldada sadu või isegi tuhandeid äriprotsessimudeleid. Need mudelid pärinevad erinevatest allikatest ja need on loonud ning neid on muutnud erinevad osapooled, kellel on erinevad modelleerimise oskused ning praktikad. üheks sagedaseks praktikaks on uute mudelite loomine, kasutades olemasolevaid mudeleid, kopeerides neist fragmente ning neid seejärel muutes. See omakorda loob olukorra, kus protsessimudelite repositoorium sisaldab mudeleid, milles on identseid mudeli fragmente, mis viitavad samale alamprotsessile. Kui sellised fragmendid jätta konsolideerimata, siis võib see põhjustada repositooriumis ebakõlasid -- üks ja sama alamprotsess võib olla erinevates protsessides erinevalt kirjeldatud. Sageli on ettevõtetel mudelid, millel on sarnased eesmärgid, kuid mis on mõeldud erinevate klientide, toodete, äriüksuste või geograafiliste regioonide jaoks. Näiteks on äriprotsessid kodukindlustuse ja autokindlustuse jaoks sama ärilise eesmärgiga. Loomulikult sisaldavad nende protsesside mudelid mitmeid identseid alamfragmente (nagu näiteks poliisi andmete kontrollimine), samas on need protsessid mitmes punktis erinevad. Nende protsesside eraldi haldamine on ebaefektiivne ning tekitab liiasusi. Doktoritöös otsisime vastust küsimusele: kuidas identifitseerida protsessimudelite repositooriumis korduvaid mudelite fragmente, ning üldisemalt -- kuidas leida ning konsolideerida sarnasusi suurtes äriprotsessimudelite repositooriumites? Doktoritöös on sisse toodud kaks üksteist täiendavat meetodit äriprotsessimudelite konsolideerimiseks, täpsemalt protsessimudelite ühildamine üheks mudeliks ning mudelifragmentide ekstraktimine. Esimene neist võtab sisendiks kaks või enam protsessimudelit ning konstrueerib neist ühe konsolideeritud protsessimudeli, mis sisaldab kõikide sisendmudelite käitumist. Selline lähenemine võimaldab analüütikutel hallata korraga tervet perekonda sarnaseid mudeleid ning neid muuta sünkroniseeritud viisil. Teine lähenemine, alamprotsesside ekstraktimine, sisaldab endas sagedasti esinevate fragmentide identifitseerimist (protsessimudelites kloonide leidmist) ning nende kapseldamist alamprotsessideks

Phenotypic evaluation of cassava (Manihot esculenta crantz) genotypes for enhanced breeding efficiency at NRCRI, Umudike

Two hundred and twenty-five cassava genotypes were evaluated for fresh root yield, dry matter content and other agronomic traits in 2015-2016 growing season at the research station of National Root Crops Research institute (NRCRI), Umudike in Nigeria. The study was conducted to determine genotypes with higher yield and dry matter content. The results of the analysis of variance (ANOVA) showed significant difference among the genotypes evaluated for fresh root yield (FYLD) at p≤0.001 and dry matter content (DMC) at p≤0.05. DMC ranged from 23.4 to 60.7% with a mean of 35.6%. FYLD varied from 27.1 to 60.3 t/ha with a mean of 27.1 t/ha. Genotype NR110386 had the highest DMC of 60.7%. The highest mean yield was recorded for genotype NR110512 (60.25 t/ha), while genotype NR100245 had the highest shoot weight of 17.5kg. There were high levels of variability among the genotypes for all the traits studied that will be useful for cassava breeding and for subsequent release to farmers in Nigeria.Keywords: Cassava, fresh root yield, dry matter content and phenotyp

LITERASI MATEMATIS KOMUNITAS ADAT CIGUGUR DITINJAU DARI PERSPEKTIF ETHNOMATHEMATICS DAN ETHNOMODELING

Uba Umbara (2020). Literasi Matematis Komunitas Adat Cigugur Ditinjau Dari Perspektif Ethnomathematics dan Ethnomodeling. Penelitian ini bertujuan untuk mendeskripsikan literasi matematis komunitas adat Cigugur ditinjau dari perspektif ethnomathematics dan ethnomodeling. Ethnomathematics dan literasi matematis adalah dua gagasan utama tentang mengetahui matematika dalam kehidupan sehari-hari. Ethnomathematics menekankan kompetensi seseorang orang yang berkembang dalam suatu kelompok budaya sementara literasi matematis merupakan kompetensi matematika seseorang yang digunakan dalam kehidupan sehari-hari. Ekplorasi mengenai ethnomathematics dirasakan tidak mampu memberikan hasil yang menonjol terutama dalam mengkonstruksi pemodelan matematis untuk tujuan pedagogis. Ide mengenai cara mengkonstruksi pemodelan matematis untuk tujuan pedagogis kemudian diabstraksi dan dikontraskan dengan istilah ethnomodeling. Beberapa penelitian mengenai ethnomathematics dan literasi matematis telah banyak dilakukan baik secara parsial maupun simultan, namun integrasi antara keduanya tidak terfokus pada apakah ethnomathematics dan pemodelan matematis yang ada dalam suatu kelompok budaya. Peneliti berangapan pentingnya penelitian ini untuk dilakukan agar kekhasan nilai dan bentuk ethnomathematics dapat digunakan sebagai suatu pendekatan pedagogik. Pendekatan penelitian yang digunakan adalah pendekatan fenomenografi dan etnometodologi dengan desain etnografi realis. Subjek penelitian yang ditentukan dalam penelitian ini berjumlah 5 orang yang terdiri dari ketua Adat, 2 Sesepuh adat dan 2 pemuda komunitas Adat Cigugur Kuningan. Hasil penelitian menunjukan ide, aktivitas, dan prosedur matematika yang dilakukan oleh komunitas adat Cigugur memenuhi aspek literasi matematis yang terdiri dari proses, konten, dan konteks. Berdasarkan studi ethnomathematics, komunitas adat Cigugur mempraktikkan dimensi kegiatan matematika universal dasar, seperti menghitung, mengukur, menempatkan, dan menjelaskan. Sementara itu berdasarkan studi etnomodeling, ide dan praktik matematika yang dilakukan oleh masyarakat relevan dengan konsep pencacahan, operasi bilangan bulat, himpunan, relasi, kekongruenan, lingkaran, dan segi banyak beraturan. Selanjutnya, Hasil penelitian menunjukan ide, aktivitas, dan prosedur matematika yang diidentifikasi berdasarkan kajian ethnomathematics dan ethnomodeling yang dilakukan oleh komunitas adat Cigugur memenuhi aspek literasi matematis. Aspek tersebut saling terkait satu sama lain, diantaranya: proses, konten, dan konteks. Kata Kunci: Literasi Matematis, Ethnomathematics, dan Ethnomodeling. Uba Umbara (2020). Mathematical Literacy of the Cigugur Indigenous Community Viewed From an Ethnomathematics and Ethnomodeling Perspective. This study aims to describe the mathematical literacy of the Cigugur indigenous community in terms of ethnomathematics and ethnomodeling perspectives. Ethnomathematics and mathematical literacy are the two main aspects in understanding mathematics in everyday life. Ethnomathematics supports one's competence that develops in a cultural group while mathematical literacy is mathematical competence used in everyday life. Exploration of accepted ethnomathematic unable to provide special interesting results in constructing mathematical modeling for pedagogical purposes. The idea of how to construct mathematical modeling for pedagogical purposes is then abstracted and contrasted with the term ethnomodeling. Some researches on ethnomathematics and mathematical literacy has been carried out partially and simultaneously, however, integration between them is not focused on whether ethnomathematics and mathematical modeling exist in a cultural group. The researcher considers it is important that this study is carried out so that the specific values and forms of etomathematics can be used as a pedagogical agreement. The research used is to discuss phenomenography and ethometodology with realist ethnographic design. The research subjects determined in this study concluded that 5 people consisted of the leader of community, 2 senior figures and 2 younger members of the Cigugur Kuningan traditional community. The results showed that mathematical ideas, activities and procedures carried out by the Cigugur indigenous community fulfilled aspects of mathematical literacy consisting of process, content, and context. Based on ethnomathematics studies, the Cigugur indigenous community practices universal dimension mathematical activities, such as counting, calculating, counting, and explaining, meanwhile regarding ethnomodeling studies, mathematical ideas and practices carried out by the community in accordance with the concepts of enumeration, integer operations, sets, relations, concordance, circles, and many irregular shapes. Furthermore, the results of the study show that mathematical ideas, activities and procedures that were identified based on ethnomathematics and ethnomodeling studies conducted by the Cigugur indigenous community fulfilled aspects of mathematical literacy. These aspects are interrelated with one another, including: process, content, and context. Keywords: Mathematical Literacy, Ethnomathematics, and Ethnomodeling

Transport Properties of Nanometer-sized Assemblies through Nanofluidic Channels with Single Entity Electrical Detection

Recently, there have been reports on biological and solid-state nanopores that identify single biopolymers or their constituent monomers by analyzing changes in ionic current blockades when they block the flux of buffer ions while travelling through the nanopores. Nevertheless, there have been several limitations in their application, especially as DNA detectors; Poor confinement of the DNA strand within the nanopore (~0.1 % of a 10 kilobase (kb) DNA), poor signal sensitivity and random motion experienced by the DNA in solution that results in a large amount of noise in the signal. These have led to the development of nanochannel-based devices, which can directly address the aforementioned challenges. Nanochannels have widths comparable to nanopores but with longer lengths. As molecules travel through nanochannels, they undergo confinement, hydrophobic and van der Waals interactions with the walls of the channel generating some interesting physics, such as the elongation of DNA molecules. The small scale analyses offer high throughput with interesting attributes not accessible at the micro-scale. Presently, an expanding research area involves the integration of nanochannels with nanogap electrodes to provide new transduction modalities for single molecules traveling through nanochannels. In these detectors, the electrical behavior (field effect, impedance, capacitance, resistance, conductance, etc.) of biomolecules are observed. These have become powerful tools for bio-sensing, single molecule manipulation and design of high throughput systems, for example as systems for DNA sequencing. This work focuses on developing a novel technique for the fabrication of mixed-scale systems (nm to mm) in quartz used for the molecular-scale sensing of single-molecules (DNAs, RNAs, peptides and proteins). These systems consist of both microchannels and nanochannels (10-100 nm). Results on the fabrication of such systems will be reported. I will also discuss our ultimate goal; to develop a platform for the rapid and efficient sequencing of biopolymers by measuring flight-times of monomer units clipped from a single polymer digested with an enzyme. The flight times will be transduced using a non-labeling electrical approach via conductivity in a detection volume defined by nano-scale electrodes (5-10 nm). Theoretical computations performed to describe the variation of the Signal-to-Noise with the nano-electrode area and nano-gap size have provided promising results

Relationship Between Bullying, Victimization, Pro-Social Behaviour and Depresssion among Teenagers in Selangor Malaysia

The current study examined the relationship between bullying, victimization and prosocial behaviour with depression among teenagers. The study also determined the moderation effect of pro-social behavior on the relationship between the independent and dependent variables. Ecological systems theory and social cognitive theory were used to highlight the assumptions of the study. The respondents of the study were 242 teenagers from selected secondary schools in Selangor, Malaysia, aged between 13-17 years (mean = 14.67 years; s.d = 1.27). Simple random sampling technique was used to identify the respondents. Peer Relationship Questionnaire (PRQ) by Rigley and Slee (1993) was used to assess bullying, victimization and pro-social behaviour among respondents of the study. The Children Depression Inventory (CDI) (Kovac, 1985) was used to measure depression. Descriptive statistics, t-test, regression and simple factorial ANOVA were used in data analysis. The findings of the study indicated that there was a significant difference (t = 3.306, p ≤ .05) in bullying between male and female teenagers. The study also indicated that depression has a significant and positive correlation with both bullying (r = .296, p ≤.01) and victimization (r = .432, p ≤ .01). Also, the study found significant and positive correlation between bullying and victimization (r = .422, p ≤ .01). Pro-social behaviour was found to have a positive correlation with victimization only (r = .148, p ≤ .05). Victimization was the only unique predictor of depression (Beta = .373, p ≤.0001) in peer relationships. Findings of the study equally revealed that pro-social behaviour does not moderate the relationship between bullying, victimization and depression. The findings of the study lend support to the theory of Bronfenbrener (1979) and Bandura (1963) in that depression can be caused by the socioenvironment, and that bullying, victimization and pro-social behaviour can all be learned from the environment. It also adds to the understanding of peer relationship among teenagers, by emphasizing the need for psychological treatment for identified bullies, victims and depressed teenagers. The study suggested that future research need to expand beyond the self report of internalizing and externalizing depression reported by the teenage respondents. The self report from parents and teachers should also be included as part of the assessment of teenagers

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Índice por Autor de la Publicación Contabilidad y Auditoría Investigaciones en Teoría Contable del N° 1 al 48 y Números Extraordinario

Performance, Problems and Remedial Measures for Roads Constructed on Expansive Soil in Ethiopia – A Review

Construction of pavement on weak or soft soil is highly risky because such soil is susceptible to differential settlements, poor shear strength, and high compressibility.  In developing countries like Ethiopia transportation facilities are very important for sustainable development.  However, a better performance of the agricultural sector in particular as Ethiopia’s economic growth is highly dependent on it, and the sustainable economic growth of the country at large would be achieved through an improvement of the basic infrastructure. Consequently, the road network has been identified as a serious bottleneck for the economic development of the country. An appreciable part of Ethiopia is covered by expansive soil. Most of the roads constructed and proposed as well as substantial amount of the newly planned railway routes in the country pass through in the heart of expansive soils. The roads on this type of soils fail before their expected design life, in some cases after few months of completion. It has been reported in 2004 that Addis Ababa City Roads Authority had annual expenditure of around 300 million Ethiopian Birr for road construction and maintenance out of which more than 30 million Ethiopian Birr was expended for routine maintenances which is too big and require special attention. The current maintenance and rehabilitation practice also depends more on visual observation and functional evaluations such as surface roughness and visual survey at network level rather than detail pavement evaluation at project level. Major trunk and lower class universal rural access roads failed with in liability period where subgrade soil is black clay soil, but researches show that various treatments such as mechanical, lime and chemical stabilization has been implemented. Moreover, based on the pavement survey, the CBR criteria couldn’t result in reliable solution in case of pavement on expansive subgrade. Thus additional Stability Criteria should be adopted to resist the heaving condition. This paper aims to present a review on the performance, problems and possible remedial measures practices for roads constructed on these problematic soils in the country. Finally, emphasis should be given to the importance in construction in this kind of soil of strictly applying engineered design of geometric, drainage, pavement thickness, material selection and proportioning. Thus, those concerned bodies shall decide to accept and control the risk associated with construction on this soil or not, or to decide that more detail study is required to allow for extra design and construction pre-emptive measures once the potential problem has been identified and the end user convinced of the cost-savings in adopting a pro-active approach. Keywords: Expansive soil, Subgrade, Stabilization, Pavement, Road constructio

Índice por Autor de la Publicación Contabilidad y Auditoría Investigaciones en Teoría Contable

Índice por Autor de la Publicación Contabilidad y Auditoría Investigaciones en Teoría Contable del N° 1 al 45 y Números Extraordinario

Índice por Autor de la Publicación Contabilidad y Auditoría

 Índice por Autor de la Publicación Contabilidad y Auditoría Investigaciones en Teoría Contable del N° 1 al 49 y Números Extraordinario