435 research outputs found
Emerging Non-OECD Countries: Global Shifts in Power and Geopolitical Regionalization
Since 1990 the banning of ethnic and other identity-based parties has become the norm in sub-Saharan Africa. This article focuses on Kenya, Tanzania and Uganda as three East African countries that have opted for different ways of dealing with such parties. Using case studies, it traces the origins of the party bans in Tanzania and Uganda and explores the reasons for the absence of a ban in Kenya. The analysis shows that the laws on particularistic parties have actually been implemented by the appropriate institutions. However,these laws have only marginally influenced the character of the political parties in the three countries: A comparison of regional voting patterns suggests that bans on particularistic parties have not ensured the emergence of aggregative parties with a national following in Tanzania and Uganda. In Kenya on the other hand, where such a ban was nonexistent until 2008, parties have not proven to be more regional.Sub-Saharan Africa, party ban, ethnic parties, Kenya, Tanzania, Uganda,party regulation, party nationalization
Evaluation of Urethral Stent Placement for Benign Urethral Obstructions in Dogs
BACKGROUND: Benign urethral obstructions (BUO) in dogs result in substantial morbidity because of challenges with conventional therapies. Treatment of malignant urethral obstructions with intraluminal urethral stents is reported to successfully relieve obstructions. HYPOTHESIS/OBJECTIVES: To evaluate the efficacy and outcome of urethral stent placement for treatment of BUO in dogs. ANIMALS: Eleven client‐owned animals with urethral stents placed for treatment of BUO. METHODS: Retrospective study in which medical records were reviewed in dogs diagnosed with BUO and treated with a metallic urethral stent. Data collected included signalment, cause of benign obstruction, procedure time, size and type of stent, complications, and short‐ and long‐term outcome. RESULTS: Eleven dogs with 15 urethral stents were included. Intraluminal urethral stent(s) relieved the obstructions in all dogs. Four dogs had 2 stents placed in separate procedures because of incomplete patency after treatment (n = 1), inadvertent compression of the stent (n = 1), or tissue ingrowth through the stent (n = 2). The median continence score after stent placement was 10 of 10 (range 3–10) with 6 dogs being continent, 3 mildly incontinent, and 1 each moderately and severely incontinent. All owners considered their dog to have an excellent long‐term clinical outcome with long‐term urethral patency. The median follow‐up time was 24 months (range 4–48). CONCLUSIONS AND CLINICAL IMPORTANCE: Urethral stents appear to be an effective treatment for benign urinary obstructions. Moderate to severe incontinence developed in a minority (12.5%) of dogs. Stents relieved obstructions in all dogs with an excellent long‐term outcome
Comparative cytogenetic characterization of primary canine melanocytic lesions using array CGH and fluorescence in situ hybridization
Melanocytic lesions originating from the oral mucosa or cutaneous epithelium are common in the general dog population, with up to 100,000 diagnoses each year in the USA. Oral melanoma is the most frequent canine neoplasm of the oral cavity, exhibiting a highly aggressive course. Cutaneous melanocytomas occur frequently, but rarely develop into a malignant form. Despite the differential prognosis, it has been assumed that subtypes of melanocytic lesions represent the same disease. To address the relative paucity of information about their genomic status, molecular cytogenetic analysis was performed on the three recognized subtypes of canine melanocytic lesions. Using array comparative genomic hybridization (aCGH) analysis, highly aberrant distinct copy number status across the tumor genome for both of the malignant melanoma subtypes was revealed. The most frequent aberrations included gain of dog chromosome (CFA) 13 and 17 and loss of CFA 22. Melanocytomas possessed fewer genome wide aberrations, yet showed a recurrent gain of CFA 20q15.3–17. A distinctive copy number profile, evident only in oral melanomas, displayed a sigmoidal pattern of copy number loss followed immediately by a gain, around CFA 30q14. Moreover, when assessed by fluorescence in situ hybridization (FISH), copy number aberrations of targeted genes, such as gain of c-MYC (80 % of cases) and loss of CDKN2A (68 % of cases), were observed. This study suggests that in concordance with what is known for human melanomas, canine melanomas of the oral mucosa and cutaneous epithelium are discrete and initiated by different molecular pathways
Análisis de posibles causas asociadas a la aparición de patentes en una empresa fabricante de automóviles
Las empresas fabricantes de automóviles necesitan aumentar considerablemente el nivel de
innovación introducido en los nuevos modelos que se deben lanzar al mercado. Esto obliga
a aumentar el nivel creativo de las personas que participan en los nuevos proyectos de
desarrollo. A fin de poder encontrar algunas de las variables más significativas asociadas
con la creatividad de los ingenieros de desarrollo, el presente trabajo expone algunas de las
conclusiones obtenidas a partir de una serie de estudios de investigación basados en
analizar algunas de las variables asociadas con la solicitud de patentes. Los estudios
expuestos se basan en análisis realizados con todas las patentes solicitadas en el año
2009 dentro de la empresa, así como con diferentes entrevistas realizadas con todos los
inventores de dichas patentes. El análisis que se realizará deberá de buscar una posible
2
correlación de algunas variables asociadas con cada invención (patente) con el tratamiento
de las mismas por cada uno de los inventores que ha desarrollado su patente.Postprint (published version
Jellyfication of marine ecosystems as a likely consequence of overfishing small pelagic fishes: Lessons from the Benguela
Changes in two contrasting ecosystems of the Benguela upwelling region,
one dominated at mid-trophic level by jellyfishes (Namibia, northern Benguela
ecosystem, where small pelagic fish abundance has been severely depleted) and
one still dominated by small pelagic fishes (South Africa, southern Benguela)
were compared in an effort to determine ecosystem trajectories under different
exploitation regimes. The role of small pelagic fishes (clupeoids) was highlighted in
the context of their importance in maintaining interactions in marine ecosystems.
In particular, we examined trophic cascades and possible irreversible changes
that promote the proliferation of jellyfishes in marine systems. We found that
the presence of large populations of small pelagic fishes has a fundamental role
in preserving beneficial trophic interactions in these marine ecosystems. The
implications of trophic cascades, such as those observed in the northern Benguela,
for ecosystem-based management were apparent. In addition, this comparison
provides contrasting case studies to inform the development of management
scenarios that avoid ecosystem shifts that affect predators and reduce the value of
fisheries production.Web of Scienc
Parties in chains: do ethnic party bans in Africa promote peace?
Since the sweeping (re)introduction of multiparty systems in the early 1990s, almost all sub-Saharan countries have introduced legal provisions to ban ethnic or other identity-based particularistic parties. Altogether, 12 countries have actually banned political parties on these grounds. In theoretical terms, such bans can exclude particularism from politics but - contrary to public discourse - also run the risk of forcing groups to resort to violent means or of becoming an object of conflict themselves. Empirically speaking, hardly any general patterns in the effects of bans can be detected. A closer look at 12 politically relevant bans in six countries reveals an initially stabilizing impact in one case (Rwanda in 1994). A ban on a religious party in Kenya in 1993 triggered violent conflict. In cases such as Equatorial Guinea (1994) and Rwanda (2001, 2003), this regulatory measure, allegedly designed to promote peace, seems to be part of the 'menu of manipulation' and is abused to suppress the opposition
Werkzeugmaschinen in der industriellen Produktion | Kennzeichnung, Planung und Einsatz moderner Fertigungskonzepte aus betriebswirtschaftlicher Sicht
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