AES-CBC Software Execution Optimization

With the proliferation of high-speed wireless networking, the necessity for efficient, robust and secure encryption modes is ever increasing. But, cryptography is primarily a computationally intensive process. This paper investigates the performance and efficiency of IEEE 802.11i approved Advanced Encryption Standard (AES)-Rijndael ciphering/deciphering software in Cipher Block Chaining (CBC) mode. Simulations are used to analyse the speed, resource consumption and robustness of AES-CBC to investigate its viability for image encryption usage on common low power devices. The detailed results presented in this paper provide a basis for performance estimation of AES cryptosystems implemented on wireless devices. The use of optimized AES-CBC software implementation gives a superior encryption speed performance by 12 - 30%, but at the cost of twice more memory for code size.Comment: 8 pages, IEEE 200

A malignus melanoma genetikai sokszínűsége és immunológiai jellemzői a terápiás paletta tükrében

Malignant melanoma, originating from pigment cells, is a highly aggressive tumour affecting patients of any age group. Its incidence is rapidly growing. The most common form can be easily diagnosed by any physician. There are some well-known genetic (skin-, eye-, hair colour, naevi, melanoma in the personal/family history) and environmental (ultraviolet radiation) predisposing factors. Treatment is based on early diagnosis and excision. When metastasis occurs, the traditional chemo- and radiotherapy gives a low response rate. Recently some newly approved targeted therapies and immunomodulant drugs have become available. This review focuses on the classification and novel therapeutic approaches of malignant melanoma to provide guidance to clinicians. Orv. Hetil., 2015, 156(15), 583-591

Peer Inclusion in Interventions for Children with ADHD: A Systematic Review and Meta-Analysis

Objective. To assess the effectiveness of peer inclusion in interventions to improve the social functioning of children with ADHD. Methods. We searched four electronic databases for randomized controlled trials and controlled quasi-experimental studies that investigated peer inclusion interventions alone or combined with pharmacological treatment. Data were collected from the included studies and methodologically assessed. Meta-analyses were conducted using a random-effects model. Results. Seventeen studies met eligibility criteria. Studies investigated interventions consisting of peer involvement and peer proximity; no study included peer mediation. Most included studies had an unclear or high risk of bias regarding inadequate reporting of randomization, blinding, and control for confounders. Meta-analyses indicated improvements in pre-post measures of social functioning for participants in peer-inclusive treatment groups. Peer inclusion was advantageous compared to treatment as usual. The benefits of peer inclusion over other therapies or medication only could not be determined. Using parents as raters for outcome measurement significantly mediated the intervention effect. Conclusions. The evidence to support or contest the efficacy of peer inclusion interventions for children with ADHD is lacking. Future studies need to reduce risks of bias, use appropriate sample sizes, and provide detailed results to investigate the efficacy of peer inclusion interventions for children with ADHD

Contesting Hydropower Dams in the Eastern Himalaya: The Cultural Politics of Identity, Territory and Self-Governance Institutions in Sikkim, India

In India’s Eastern Himalayan State of Sikkim, the indigenous Bhutia communities, Lachungpas and Lachenpas, successfully contested all proposed hydropower projects and have managed to sustain an anti-dam opposition in their home regions, Lachung and Lachen. In this paper, we discuss this remarkable, un-researched, effective collective action against hydropower development, examining how identity and territory influence collective action through production, creation and application of vernacular knowledge systems. The role of the Dzumsa, a prevailing traditional system of self-governance among the Lachungpas and Lachenpas, has been central in their collective resistance against large dams in Lachung and Lachen. Our findings show that contrary to popular imageries, the Dzumsa is neither an egalitarian nor a democratic institution—rather, it is an exercise of an “agonistic unity”. The Dzumsas operate as complex collectives, which serve to politicize identity, decision-making and place-based territoriality in their struggle against internal and external threats. Principles of a “vernacular statecraft” helped bringing the local communities together in imperfect unions to oppose modernist designs of hydropower development. However, while such vernacular institutions were able to construct a powerful local adversary to neoliberal agendas, they also pose high social, political and emotional risks to the few within the community, who chose not to align with the normative principles of the collective

A balatoni fitoplankton tér- és időbeli mintázata 2003-ban

Jelen kutatásban a Balaton fitoplanktonjának fajösszetételét és biomasszáját vizsgáltuk a tó hossztengelyének 5 mintavételi pontján 2003. május 19. és október 29. között összesen 12 alkalommal. A tó minden területén késő nyári alga biomassza maximumot tapasztaltunk. A maximum időpontjában a Cylindrospermopsis raciborskii mellett az Aphanizomenon fajok (A. flos-aquae, A. klebahnii, A. issatschenkoi) voltak meghatározóak. 2003-ban – csakúgy, mint az előző két évben – a Keszthelyi-medencében alacsonyabb nyári fitoplankton biomassza maximumot mutattunk ki, mint Szigliget térségében. Utóbbi jelenleg a Balaton legmagasabb trofitású területe. Az alga biomassza, az abból származtatott klorofill-a adatok alapján – az OECD és a Felföldy által kidolgozott trofitási skála határértékei szerint – a Balaton nyugati medencéje mezo-eutróf, a keleti, pedig a mezotróf tartományba volt sorolható azokban az időpontokban is, amikor az alga biomassza éves maximumot mutatott. Az EU Víz Keretirányelv szempontjai alapján kidolgozott, összbiomasszán alapuló állapotbecslés szerint a Balaton keleti medencéjének ökológiai állapota minden mintavételi időpontban kiváló vagy jó volt. A Keszthelyi-medence adatai egy, a Szigligeti-medence adati két és a Balatonakali előtt található tórész három alkalommal csak közepes ökológiai állapotúnak bizonyult, egyéb esetekben jónak vagy kiválónak. Az ugyanezen keretirányelv szerint kidolgozott faji adatokon alapuló minőségi index ennél rosszabb állapotot mutatott minden tóterületen. Kimutatható, hogy a Balaton keleti tórészén erősen visszaszorulóban vannak az eutrofizálódás kapcsán a tóban megjelent fajok, helyettük az eredeti elemek dominanciája nő. a folyamat a nyugati medencében is tetten érhető, de kevésbé előrehaladott. A diverzitás, a fajszám és az egyenletesség 2003-ban nem mutatott jelentős és tendencia jellegű eltéréseket a tó hossztengelye mentén. A nyári maximális biomasszaadatokat a Keszthelyi-medence és a tihanyi térség hosszútávú adatsorába helyezve a Balaton nyíltvizének folytatódó állapotjavulása detektálható