Engaging Residents in Low-Income Housing Communities to Volunteer and Earn an Economic Opportunity:

Low-income housing families have an acute need to gain an economic opportunity to build financial stability. Bella Communities' innovative resident volunteer engagement program, coupling the opportunity to earn rent credits through volunteering and promoting civic engagement, is rooted in the idea that the opportunity to earn an economic incentive through volunteering can fundamentally impact people's financial stability in two ways: first, by providing residents a solution to stitch a financial backstop to withstand emergencies and shortfalls, and, second, by fostering a sense of financial relief so that residents can pursue other endeavors to improve personal wellbeing and the community through volunteering. The architecture framework of our approach ensures optimal quality, efficiency, and effectiveness in our services. We believe the ReV-UP program adds value by being a "strong link within the chain" of asset-based community development

Differences of weighted composition operators between the Fock spaces

We study some important topological properties such as boundedness, compactness and essential norm of differences of weighted composition operators between Fock spacesComment: 10 page

Weighted composition operators between different Fock spaces

We study weighted composition operators acting between Fock spaces. The following results are obtained: (1) Criteria for the boundedness and compactness; (2) Characterizations of compact differences and essential norm; (3) Complete descriptions of path connected components and isolated points of the space of composition operators and the space of nonzero weighted composition operators

Avl for sykdomsresistens mot Edwardsiella ictaluri i Pangasius (Pangasianodon hypophthalmus)

Bacillary necrosis (BN) is a disease caused by Edwardsiella ictaluri (E. ictaluri) that results in severe economic losses in farming of Mekong striped catfish (Pangasianodon hypophthalmus) in Vietnam. Genetic selection against the disease is a preventive measure that relies on a well-tested and stable challenge test, that the challenge tested survival shows genetic variance (heritability) and that the genetic correlation between the survival in the challenge and in the field is high. To accomplish these aims, a series of challenge tests for resistance against BN were carried out with a family material of Mekong striped catfish. The Mekong striped catfish breeding program in Vietnam was initiated in 1999. Wild stocks that had gone through domestication in three hatcheries in Mekong delta were mated to establish three subpopulations or year-classes; 2001, 2002 and 2003 (generation 1). Fish used in this study, in the four challenge-test experiments, were from the third generations of year-class 2001 (experiment 1, n = 2,155), third generations of year-class 2002 (experiment 2, n = 1,988), third generations of year-class 2003 (experiment 3, n = 5,689), and the fourth generation of year-class 2001 (experiment 4, n = 6,177). Experiment 1 was carried out in a single tank, whereas the last three experiments were carried out in two replicated tanks. In the last two year-classes (experiments 3 and 4), harvest body weight and survival were available from a growth test for siblings of the BN tested families (n = 13,322 and n = 13,847, respectively). Paper I drew inference from experiments 1 – 4 to propose a challenge test, based on three days acclimatization of test fish prior to the challenge, halving the water level in the test, with a temperature of 260 C, and the cohabitant shedders (fish injected with E. ictaluri) released directly into the test tank, making up around ⅓ of the fish. The results indicated that the bacteria should be added directly to water and that additional experimentations are needed to clarify density and timing. Finally, genetic analyses of dead/alive at the end of the challenge in the two test tanks in the same experiment were considered two traits and their genetic correlation was estimated high by use of a bivariate linear sire-dam model. This means that the same trait is tested in the two replicated tanks and that data can be analysed across tanks. In Paper II, the data were first analysed per experiment, across tanks by use of three statistical models; dead/alive at the end of the test and at 50% mortality, either with a linear sire-dam model or a comparable model that accounts for the variable being categoric, i.e. with a threshold sire-dam model. Moreover, a linear survival sire-dam model was used which analysed dead/alive per day of testing and where a fish was assigned a final phenotype of 0 the day it died. For the survival model and at the end of the test the family effects in one tank (sum of sire, dam and common environmental effects) were correlated to phenotypic survival for the same families in the other tank. The same was done for the two other models both at the end of the test and at 50% mortality, for cross-validation. The results showed that variance and heritability were highest at 50% mortality (h2 = 0.22 with the threshold model and h2 = 0.135 with the comparable linear model). Since the family effect at the end of the test and at 50% mortality was estimated with a relatively low rank correlation (≤ 0.72), it indicates that the trait at 50% mortality is a mixture of susceptibility to the disease and whether the fish is able to survive with the disease if it has been infected (endurance), while mortality at the end of the test, if it ceases, rather tests susceptibility to the disease. This led us to the following; that the survival test should cease at a mortality of 50%. Moreover, the cross-validation showed that the breeding values could be estimated by use of a simple, linear sire-dam model, although this model did not cross-validate better than the corresponding linear survival model. Paper III utilized data from experiments 3 and 4 in addition to harvest body weight and survival in the growth tests. The data for the three traits were analysed with a linear sire-dam model within experiment, without modelling of common environment, to reduce standard error of estimates. Low, non-significant (relative to zero) genetic correlations were estimated between BN and harvest body weight, which means that both traits can be improved in the same breeding program. Additionally, harvest body weight had positive genetic correlations with survival in the growth tests, which proposes that selection for growth will genetically improve survival in the growth test. Estimated genetic correlation between BN and survival in the growth test varied across experiments, from -0.02 ± 0.11 in experiment 3 to 0.26 ± 0.09 in experiment 4. The latter, weak genetic correlations led us to conclude that a stronger genetic relationship between BN and survival in the field needs to be established to defend continued challenge testing of Mekong striped catfish against E. ictaluri. This can be done in a new field test (in addition to the standard growth test) with siblings of the same families, where antibiotic treatment is not carried out and the cause of death is continuously monitored. Meanwhile, it is proposed to continue the routine challenge testing with the aim of indirectly improving field survival through selection.Bakteriell nekrose (BN) er en sykdom forårsaket av Edwardsiella ictaluri (E. ictaluri) som resulterer i alvorlige økonomiske tap i oppdrettet av Pangasius (Pangasianodon hypophthalmus) i Vietnam. Avlsarbeid mot sykdommen er et preventivt tiltak som er avhengig av at det blir etablert en velfungerende og stabil test av overlevelse og at denne viser tilstrekkelig genetisk variasjon (arvegrad). Videre er en avhengig av høy genetiske korrelasjonen mellom test-overlevelse og overlevelse i felt. For å nå disse målene, ble en serie av tester av resistens mot BN gjennomført med et familiemateriale i Pangasius. Avlsprogrammet med Pangasius i Vietnam startet opp i 1999. Avlsmaterialet som hadde gjennomgått domestisering i tre oppdrettsanlegg i Mekong ble paret for å danne tre subpopulasjoner eller årsklasser; 2001, 2002 og 2003 (førstegenerasjon). Fisken brukt i denne studien basert på fire forsøk fra tredje generasjon og årsklasse 2001 (forsøk 1, n = 2155), tredje generasjon og årsklasse 2002 (forsøk 2, n = 1988), tredje generasjon og årsklasse 2003 (forsøk 3, n = 5689) og fjerde generasjon og årsklasse 2001 (forsøk 4, n = 6177). Forsøk 1 ble gjennomført i en tank, mens de tre siste forsøkene ble utført i repliserte tanker. I de to siste årsklassene (forsøkene 3 og 4) var slaktevekt og overlevelse tilgjengelig fra en tilveksttest med søsken av de BN testede familiene (n =13322 og 13847). Paper I trakk informasjon ut av forsøk 1 – 4 for å foreslå en overlevelsestest, basert på tre dagers akklimatisering, halvering av vann nivået i testen, med en vanntemperatur på 26 grader og at kohabitanter (fisk injisert den sykdomsfremkallende bakterien) sluppet direkte inn i testtankene utgjorde ca. 1/3 av fisken. Resultatene pekte også på at bakterier trengs å adderes til vann, men at ytterligere forsøk trengtes for å avklare tetthet og tidspunkt. Til slutt ble genetiske analyser av død/levende ved avslutning av testen i de to testtankene i samme forsøk betraktet som to egenskaper og den genetiske korrelasjonen estimert som høg ved hjelp av en to-variabel lineær far-mor modell, som betyr at den samme egenskapen testes i de to tankene og at data kan analyseres på tvers av tanker. I Paper II ble data først analysert per forsøk, over tank, ved hjelp av tre statistiske modeller; død/levende i slutt av testen og ved 50 % død, enten ved bruk av en lineær far-mor modell eller en tilsvarende modell som hensyntar at variabelen er kategorisk, en såkalt threshold far-mor modell. Videre ble det brukt en lineær levetids far-mor modell som analyserer død/levende hver dag i testen og hvor fisken tilegnes en endelig fenotype på 0 den dagen den dør. For levetidsmodellen og ved slutten av testen ble familieeffekten i en tank (sum av far, mor og felles miljøeffekter) korrelert til fenotypisk overlevelse for samme familie i den andre tanken, og det samme ble gjort for de to andre modellene, både ved slutten av testen og ved 50 % dødelighet, for kryssvalidering. Resultatene viste at varians og arvegrad var størst ved 50 % dødelighet (0.22 med threshold modellen og 0.135 med tilsvarende lineær modell) og siden familieeffektene ved slutten av testen og ved 50 % dødelighet ble estimert til å ha en relativt lav rang korrelasjon (≤ 0.72), indikerer dette at egenskapene ved 50% dødelighet er en blanding av både mottagelighet for sykdommen og om fisken klarer å overleve med sykdommen om den er infisert, mens dødelighet ved slutten av testen, om den flater ut, heller tester mottagelighet for sykdommen. Dette fører fram til følgende anbefaling; at overlevelsestesten bør flate ut ved en dødelighet på 50 %. Videre viste kryss-valideringen at avlsverdier gjerne kan bli estimert ved hjelp av en enkel lineær modell, selv om denne ikke kryssvaliderte signifikant bedre enn den lineære levetidsmodellen. Paper III utnyttet data fra forsøkene 3 og 4 samt data for vekt og dødelighet i en tilveksttest. Data for de tre egenskapene ble analysert med en lineær far-mor modell innen hvert forsøk, uten modellering av felles miljø, for å redusere standardfeil på estimatene. Lave, ikke signifikante (relativt til null) genetiske korrelasjoner ble estimert mellom BN og slaktevekt, som betyr at begge egenskaper kan forbedres i ett og samme avlsprogram. I tillegg viste slaktevekt en positiv genetisk korrelasjon med overlevelse i tilveksttesten, som foreslår at seleksjon for vekst vil genetisk sett forbedre overlevelse i tilveksttesten. Estimert genetisk korrelasjon mellom BN og overlevelse i tilveksttesten varierte mellom forsøk, fra -0.002 ± 0.11 i forsøk 3 til 0.26 ± 0.09 i forsøk 4. De siste, svake korrelasjonene førte fram til følgende konklusjon: at en sterkere genetisk sammenheng trengs å etableres for å kunne forsvare fortsatt testing av Pangasius for E. ictaluri, i en ny felttest (i tillegg til tilveksttesten), basert på full-søsken av de samme familiene, hvor en ikke bruker antibiotika og hvor en kontinuerlig overvåker årsaken til død. I mellomtiden foreslås det å fortsette testingen med mål om å bedre feltoverlevelsen gjennom avl.Vietnamese Ministry of Agriculture and Rural Development with the project entitled ‘Estimating genetic gain for growth and fillet yield in selection program of Mekong striped catfish’ carried out at the Research Institute for Aquaculture No.2 (RIA2) from 2009-2012

NEURAL NETWORK ON VIRTUALIZATION SYSTEM, AS A WAY TO MANAGE FAILURE EVENTS OCCURRENCE ON CLOUD COMPUTING

Cloud computing is one important direction of current advanced technology trends, which is dominating the industry in many aspects. These days Cloud computing has become an intense battlefield of many big technology companies, whoever can win this war can have a very high potential to rule the next generation of technologies. From a technical point of view, Cloud computing is classified into three different categories, each can provide different crucial services to users: Infrastructure (Hardware) as a Service (IaaS), Software as a Service (SaaS), and Platform as a Service (PaaS). Normally, the standard measurements for cloud computing reliability level is based on two approaches: Service Level Agreements (SLAs) and Quality of Service (QoS). This thesis will focus on IaaS cloud systems’ Error Event Logs as an aspect of QoS in IaaS cloud reliability. To have a better view, basically, IaaS is a derivation of the traditional virtualization system where multiple virtual machines (VMs) with different Operating System (OS) platforms, are run solely on one physical machine (PM) that has enough computational power. The PM will play the role of the host machine in cloud computing, and the VMs will play the role as the guest machines in cloud computing. Due to the lack of fully access to the complete real cloud system, this thesis will investigate the technical reliability level of IaaS cloud through simulated virtualization system. By collecting and analyzing the event logs generated from the virtualization system, we can have a general overview of the system’s technical reliability level based on number of error events occur in the system. Then, these events will be used on neural network time series model to detect the system failure events’ pattern, as well as predict the next error event that is going to occur in the virtualization system

LP-OVOD: Open-Vocabulary Object Detection by Linear Probing

This paper addresses the challenging problem of open-vocabulary object detection (OVOD) where an object detector must identify both seen and unseen classes in test images without labeled examples of the unseen classes in training. A typical approach for OVOD is to use joint text-image embeddings of CLIP to assign box proposals to their closest text label. However, this method has a critical issue: many low-quality boxes, such as over- and under-covered-object boxes, have the same similarity score as high-quality boxes since CLIP is not trained on exact object location information. To address this issue, we propose a novel method, LP-OVOD, that discards low-quality boxes by training a sigmoid linear classifier on pseudo labels retrieved from the top relevant region proposals to the novel text. Experimental results on COCO affirm the superior performance of our approach over the state of the art, achieving $\textbf{40.5}$ in $\text{AP}_{novel}$ using ResNet50 as the backbone and without external datasets or knowing novel classes during training. Our code will be available at https://github.com/VinAIResearch/LP-OVOD.Comment: Accepted to WACV 202

A new method in determination of electrical parameters for failure diagnostic applicable to power transformers

[no abstract

Sustainable Symbiotic Relationship in The Human Ecosystem in The Development of Public Spaces (Case of Hanoi Historical Inner-City Area)

In the last few years, the concept of the Human Ecosystem has been mentioned a lot frequently in Urban Environments related to social and natural ecosystems. The organization of public spaces cannot help but affect the relationships between human and natural ecology, economy, and culture. Perhaps the human activities have compromised the ecosystem so those relationships can be easily broken down. But it can also be enriched, or recovered from failures by establishing Symbiotic Relationships between natural, economic, and cultural elements in urban ecosystems. The research presents theoretical issues of Human Ecosystems in public space organization and specific applications in the case of Hanoi historical inner-city areas. It focuses on discussing theories of the structure and morphology of Human Ecosystems, the human behavior, the relationship between community behaviors, natural environment, and architecture of public spaces, to organize, enrich, and balance the service ecosystem of public spaces. These features are considered vital by the author in contributing to the preservation of natural resources, urban architectural heritage, creating architectural spaces and planning of public spaces towards ecological and green urban development