1. Mathematical Programming Model for Controlled Tabular Adjustment (CTA) Statistical agencies use different methods to protect the confidentiality of tabular data. The most widely used method, complementary cell suppression, suppresses both primary (sensitive) and secondary (non-sensitive cells) to assure confidentiality. Despite its popularity, it suffers from severe limitations. Complementar...

In the first paper of this two-part series, the assembly variant design system architecture and complementary assembly methodology have been presented. The general complementary assembly models, hierarchical assembly model and relational assembly model, are established which were further specified as assembly variants model (AVM) and assembly mating graphs (AMG) respectively to cater for the ne...

Certificates of non-negativity are fundamental tools in optimization. A “certificate” is generally understood as an expression that makes the non-negativity of the function in question evident. Some classical certificates of non-negativity are Farkas Lemma and the S-lemma. The lift-and-project procedure can be seen as a certificate of non-negativity for affine functions over the union of two po...

There are similarities between semidefinite programming and linear programming in theory and practice, e.g., duality theory (see Bellman and Fan [5]), the role of complementary slackness, and efficient solution techniques using interior-point methods (see Nesterov and Nemirovski [11], Wright, [20]). Semidefinite programming has been developed both theoretically and practically for the past few ...

background: there are two types of primary dysmenorrhea (spasmodic and congestive) which differ from each other in terms of the time of menstrual cycle outbreak, pain quality and other symptoms. the present study aimed to determine the effect of acupressure at the sanyinjiao point (sp-6) on severity of menstrual symptoms (primary outcome) and the duration of resting time as well as the number o...

background: humans have been involved with the phenomena of pain and pain relief from the ancient times. back pain is the most common pain. in fact, eight out of ten people experience it in their lifetime. however, individuals with specific jobs, including nurses, are faced with this problem more. nursing is in the top ten careers suffering from the most severe musculoskeletal injuries. there a...

background: to determine the prevalence and patterns of complementary and alternative medicine (cam) use in urban population in isfahan. methods: in a cross–sectional study through two-stage sampling methods, 870 individuals were selected from isfahan province, center of iran. we selected 20 clusters randomly and chose one household from each cluster by chance then 24 households were included...

abstract background: children suffering from cancer frequently use complementary and alternative medicine (cam). most of people do not disclose using cam to their physicians as they fear to be blamed or prohibited using them. some of these products may interfere with the conventional remedies. the aim of this study was to investigate the frequency and characteristics of cam use in pediatric onc...

background : using complementary and alternative medicine (cam) has been increased worldwide during last years and women are the greatest users of these methods especially in the pregnancy period. due to lack of adequate information, this study aimed to assess the status of using complementary and alternative medicine by women in the pregnancy period methods: in this cross-sectional study, 599 ...

in this paper using strongly duplexes we introduce a new class of (semi)hypergroups. the associated (semi)hypergroup from a strongly duplex is called duplex (semi)hypergroup. two computer programs written in matlab show that the two groups $z_{2n}$ and $z_{n}times z_{2}$ produce a strongly duplex and its associated hypergroup is a complementary feasible hypergroup.