225,379 research outputs found
A comment on "Intergenerational equity: sup, inf, lim sup, and lim inf"
No full textWe reexamine the analysis of Chambers (Social Choice and Welfare, 2009), that produces a characterization of a family of social welfare functions in the context of intergenerational equity: namely, those that coincide with either the sup, inf, lim sup, or lim inf rule. Reinforcement, ordinal covariance, and monotonicity jointly identify such class of rules. We show that the addition of a suitable axiom to this three properties permits to characterize each particular rule. A discussion of the respective distinctive properties is provided.Social welfare function; Intergenerational equity; Lim sup ; Lim inf
Multiple functions of LIM domain-binding CLIM/NLI/Ldb cofactors during zebrafish development
No full textThe crucial involvement of CLIM/NLI/Ldb cofactors for the exertion of the biological activity of LIM homeodomain transcription factors (LIM-HD) has been demonstrated. In this paper we show that CLIM cofactors are widely expressed during zebrafish development with high protein levels in specific neuronal cell types where LIM-HD proteins of the Isl class are synthesized. The overexpression of a dominant-negative CLIM molecule (DN-CLIM) that contains the LIM interaction domain (LID) during early developmental stages of zebrafish embryos results in an impairment of eye and midbrain-hindbrain boundary (MHB) development and disturbances in the formation of the anterior midline. On a cellular level we show that the outgrowth of peripheral but not central axons from Rohon Beard (RB) and trigeminal sensory neurons is inhibited by DN-CLIM overexpression. We demonstrate a further critical role of CLIM cofactors for axonal outgrowth of motor neurons. Additionally, DN-CLIM overexpression causes an increase of Isl-protein expression levels in specific neuronal cell types, likely due to a protection of the DN-CLIM/LIM-HD complex from proteasomal degradation. Our results demonstrate multiple roles of the CLIM cofactor family for the development of entire organs, axonal outgrowth of specific neurons and protein expression levels
J.-R. Kupper. — Correspondance de Bahdi-Lim
No full textDussaud René. J.-R. Kupper. — Correspondance de Bahdi-Lim. In: Syria. Tome 31 fascicule 3-4, 1954. pp. 308-309
Four and a half LIM protein 1C (FHL1C)
No full textFour-and-a-half LIM domain protein 1 isoform A (FHL1A) is predominantly expressed in skeletal and cardiac muscle. Mutations in the FHL1 gene are causative for several types of hereditary myopathies including X-linked myopathy with postural muscle atrophy (XMPMA). We here studied myoblasts from XMPMA patients. We found that functional FHL1A protein is completely absent in patient myoblasts. In parallel, expression of FHL1C is either unaffected or increased. Furthermore, a decreased proliferation rate of XMPMA myoblasts compared to controls was observed but an increased number of XMPMA myoblasts was found in the G(0)/G(1) phase. Furthermore, low expression of K(v1.5), a voltage-gated potassium channel known to alter myoblast proliferation during the G(1) phase and to control repolarization of action potential, was detected. In order to substantiate a possible relation between K(v1.5) and FHL1C, a pull-down assay was performed. A physical and direct interaction of both proteins was observed in vitro. In addition, confocal microscopy revealed substantial colocalization of FHL1C and K(v1.5) within atrial cells, supporting a possible interaction between both proteins in vivo. Two-electrode voltage clamp experiments demonstrated that coexpression of K(v1.5) with FHL1C in Xenopus laevis oocytes markedly reduced K(+) currents when compared to oocytes expressing K(v1.5) only. We here present the first evidence on a biological relevance of FHL1C
Rhinolophus chiewkweeae Yoshiyuki and Lim 2005
No full textRhinolophus chiewkweeae Yoshiyuki and Lim, 2005 Rhinolophus chiewkweeae Yoshiyuki and Lim, 2005: 29; Gunung Ledang, Tangkak, Muar, Johor, MALAYSIA, 1276 m (Boo-Liat Lim, collector; NSMT-M 33472) [13]. Common English name: Chiewkwee’s Horseshoe Bat Barcode Index Number: There are no DNA barcodes recorded under this name on BOLD. Remarks: R. pearsonii is reported to occur in Peninsular Malaysia [9] although we could not find any precise locality reports. It is likely that the records of R. pearsonii from Peninsular Malaysia, if valid, may actually represent R. chiewkweeae [154]. However, our NJ analysis revealed that the DNA barcodes under these names (but not including Peninsular Malaysia specimens) were 12% divergent in COI mtDNA (see Fig 3 in [154]). IUCN status: Not Evaluated Recorded at: Melaka: Asahan Forest Reserve [13]; Johor: Gunung Ledang and Labis Forest Reserve [13]; Kedah: Lubok Semilan, Ulu Melaka in Pulau Langkawi and Weng Subcatchment Area in Ulu Muda Forest Reserve Forest Reserve [13]; Perlis: Wang Kelian State Park [50]; Perak: Temenggor Lake [69]; Terengganu: Tasik Kenyir [69], Sungai Buweh [154]. R. chiewkweeae has been reported from lowland, hill and submontane dipterocarp forests, and an island [13, 154]. In Peninsular Malaysia, all reported individuals were caught in mature and secondary dipterocarp forests [154]. The low capture rate of R. chiewkweeae suggested that the population density of the species in Peninsular Malaysia is likely to be very low [50, 154]Published as part of Voon-Ching Lim, Rosli Ramli, Subha Bhassu & John-James Wilson, 2017, A checklist of the bats of Peninsular Malaysia and progress towards a DNA barcode reference library, pp. 1-65 in PLoS ONE 12 (7) on page 30, DOI: 10.1371/journal.pone.0179555, http://zenodo.org/record/425135
Alec Fong Lim
No full textLaunch of 'Litchfield's Gold' by Janet Dickinson. Alec Fong Lim talking to guests. L-R: Janet Dickinson; Alec Fong Lim; Graeme Cheater.Unknown.Date:198
INTEGRATED ECOLOGICAL PLANNING IN SINGAPORE: NEOTIEWPIA ECO-VILLAGE IN BUSTLING METROPOLITAN
No full textABSTRACT :The Neotiewpia Eco-Village is located within the Lim Chu Kang district at the north of Singapore. The Eco-Village only comprised of 3.5 sq km. Meanwhile the area was
dominated by farms, chalets and Sungei Buloh Wetland Reserve. In 2006, National University of Singapore, School of Design and Environment (SDE), MSc. Environmental Management and Nature Society of Singapore initiated an ecological planning exercise within the Neotiewpia site
to reduce the environmental impact from the development while providing Eco-friendly Tourism and R&D activities that feasible in the site. We did participate in the exercise and we tried explaining the ecological process, the limitation and potential development for integrated
ecological planning framework in Developing Countries like Indonesia, Brazil, etc with high ecological-values ecosystems. The Vision of Neotiewpia was “A Model Eco-Village that Respects its Natural Heritage, Builds Strong Community Links and Promotes Economic Development on Nature’s Premises." And Neotiewpia was successfully planned and designed with integrated ecological planning approach. It embraced the land evaluation and impact assessment. Further the plan was found feasible by the Singapore Government by earmarking the Lim Chu Kang and Kranji for Agri-tainment development in 2008 (although partially
implemented). The Neotiewpia or Lim Chu Kang area was found thriving with Green-Economy and Agro-Tourism. This integrated ecological planning could be translated to other areas in Developing Countries with agriculture potential and facing development pressures such as Neotiewpia. This concept would give alternate Green-Solution to the current economic crisis
Lim Keun-Woo
No full text학위논문(박사)--아주대학교 일반대학원 :컴퓨터공학과,2014. 2본 논문에서는 WLAN 기반 멀티 홉 네트워크에서 데이터를 보급할 때 서비스 품질 (QoS) 을 향상시키기 위한 효율적인 기술에 대해 연구한다. 스마트폰 및 이동 네트워킹 기술이 큰 발전을 이룸에 따라, 새로운 무선 네트워킹 서비스 및 어플리케이션이 대두될 것으로 기대되고 있다. 이 트랜드를 따라 WLAN 기반의 네트워킹 제품 및 디바이스가 미래 서비스를 지원하기 위한 가장 핵심 기술로 떠오르고 있다. 하지만, 기존 WLAN 환경에서의 QoS 를 지원하기 위한 연구는 미래의 다양한 서비스 및 어플리케이션이 요구하는 요구사항을 만족할 수 없다. 그렇기 때문에, WLAN 기반의 통신 기술은 미래의 다양한 서비스 지원을 위해 이러한 요구사항을 충족하고 효율적인 QoS 를 지원할 수 있는 방법을 제시하여야 한다.
본 논문에서는 WLAN 기반 멀티 홉 네트워킹 환경의 다양한 미래 시나리오 및 사용 예시를 분석하고 이러한 환경에서 발생할 수 있는 문제점을 분석한다. 또한, 이러한 문제점을 해결하기 위하여 새로운 기술을 제시하고, 성능 분석을 통해 해당 기술들이 미래 다양한 WLAN 기반 서비스의 효율성을 높일 수 있다는 것을 증명한다. 특히 QoS 향상을 위한 다음 3가지 기술에 초점을 맞춘다: 1) 차량 통신 시스템에서의 QoS 향상 기술, 2) 실시간 멀티미디어 감시 시스템 기술, 3) 에너지 효율적인 QoS 향상 기술. 각각의 QoS 향상 기술은 WLAN 기반 멀티 홉 네트워킹 환경에서 요구하는 다양한 요구 사항에 맞춰 서비스 품질을 향상시킬 수 있을 것이라 기대된다.CHAPTER I INTRODUCTION
I.A Contributions of this Thesis
I.B Overview of the Thesis
CHAPTER II BACKGROUND AND RELATED WORK
II.A IEEE 802.11 WLAN standard
III.A.1 Service Differentiation
III.A.2 Multi-hop routing
III.A.3 Mobility Management
III.A.4 Wi-Fi Direct for mobile D2D communication
II.B Taxonomy of QoS in WLAN based networks
II.C Work on Ensuring Mobile Reliability
II.C.1 Related Work on Fast Handover
II.C.2 Related Work on Mobile Data Provisioning
II.D Work on WLAN Access Control
II.D.1 Related Work on Rate Control
II.D.2 Related Work on Multi-hop Flow Control
II.D.3 Related Work on Admission Control
II.E Work on Service Differentiation
II.E.1 Related Work on Queue-based Service Differentiation
II.E.2 Related Work on Station-based Service Differentiation
II.F Design Considerations for enhancing QoS in future services
CHAPTER III QOS-ENHANCED DATA HARVESTING IN VEHICULAR NETWORKS
III.A Background
III.B Proposed Scheme
III.B.1 Scheme 1: Multi-hop Data Harvesting with Replicas (MDH-R)
III.B.2 Scheme 2: Multi-hop Data Harvesting with Replicas and Aggregation (MDH-RA)
III.C Performance Evaluation
III.C.1 Simulation Environments
III.C.2 Simulation Results of MDH-R
III.C.3 Simulation Results of MDH-RA
III.D Chapter Summary
CHAPTER IV REAL-TIME DATA DISSEMINATION IN WLAN MESH NETWORKS
IV.A Background
IV.B Proposed Scheme
IV.B.1 Adaptive Mesh Network Architecture
IV.B.2 Multi-Gateway Route Selection
IV.B.3 Congestion Prediction
IV.B.4 Congestion Avoidance
IV.B.5 Routing Loop Prevention
IV.B.6 Example of MGR-CA Operation
IV.C Performance Evaluation
IV.C.1 Testbed Implementation
IV.C.2 Simulation Results
IV.D Chapter Summary
CHAPTER V POWER-EFFICIENT QOS IN WLAN BASED D2D ENVIRONMENTS
V.A Background
V.B Proposed Scheme
V.B.1 Problem Statement
V.B.2 Dynamically Synchronized Power Management
V.B.3 Adaptive CTWindow Control (AC)
V.B.4 Adaptive Temporary CTWindow Control (AT)
V.C Performance Evaluation
V.C.1 Formulation of Duty Cycle and End-to-End delay
V.C.2 Performance Evaluation
V.C.3 Formulation and Evaluation of AC and AT control
V.D Chapter Summary
CHAPTER VI CONCLUSIONDoctoralThis thesis focuses on methods of enhancing Quality-of-Service (QoS) in WLAN based multi-hop networks for more efficient data dissemination. With great advancements in the technology of smartphones and mobile networking, the global society is beginning to embrace another boom of various wireless networking services and applications. Following this trend, WLAN based networking devices and products have become the most popular means of data communication for supporting these future services. However, contrary to existing QoS researches conducted in WLAN environments, these future applications have unique demands and requirements depending on the type of service they provide. Therefore, as being the primary means of communication in the present and future alike, WLAN based communication technology must account for these difference in services and provide efficient means of supporting QoS for them.
This thesis views various scenarios and use cases of WLAN based multi-hop networking environments and analyzes the problems that current WLAN systems may pose. To account for these problems, novel solutions are proposed and analyzed to show that the contributions in this thesis can greatly improve the efficiency of future WLAN based services. Especially, three technologies of supporting QoS are discussed: 1) Enhancing QoS for data dissemination in vehicular speed communications systems, 2) Streaming multimedia surveillance systems, and 3) Power efficient QoS for battery-limited systems. It is expected that each technology can improve the performance of QoS in WLAN based multi-hop networking applications depending on the various requirements that they demand
Andrej Tarkovskij teorico del cinema. Un’inquadratura più un’inquadratura non fanno due inquadrature e nemmeno una terza inquadratura drammatica: scolpiscono nel tempo un'inquadratura più lunga
No full textQuaderni di Musica/Realtà, 58, LIM
Utilizzare la LIM per insegnare matematica: come, quando e perché?
No full textIn questo articolo si vuol riflettere sulle opportunità offerte
dall’utilizzo della LIM nell’insegnamento-apprendimento della
matematica, focalizzando l’attenzione sul ruolo del docente
e sulle competenze necessarie perché tali opportunità
possano essere sfruttate nel migliore dei modi. A tale scopo
risulta importante precisare in che termini un uso appropriato
della LIM possa essere funzionale a sviluppare e potenziare
negli studenti la costruzione di significati matematici
- …
